view OpenPepXLLF.xml @ 4:04168c0bdfa7 draft

"planemo upload for repository https://github.com/galaxyproteomics/tools-galaxyp/tree/master/tools/openms commit 020906fb54bde7fc143c356f41975c378a741315"
author galaxyp
date Wed, 09 Sep 2020 20:05:58 +0000
parents 44d9ef025505
children a8c028751a74
line wrap: on
line source

<?xml version='1.0' encoding='UTF-8'?>
<!--This is a configuration file for the integration of a tools into Galaxy (https://galaxyproject.org/). This file was automatically generated using CTDConverter.-->
<!--Proposed Tool Section: [Identification]-->
<tool id="OpenPepXLLF" name="OpenPepXLLF" version="@TOOL_VERSION@+galaxy@GALAXY_VERSION@" profile="20.05">
  <description>Tool for protein-protein cross linking with label-free linkers.</description>
  <macros>
    <token name="@EXECUTABLE@">OpenPepXLLF</token>
    <import>macros.xml</import>
    <import>macros_autotest.xml</import>
    <import>macros_test.xml</import>
  </macros>
  <expand macro="requirements"/>
  <expand macro="stdio"/>
  <command detect_errors="exit_code"><![CDATA[@QUOTE_FOO@
@EXT_FOO@
#import re

## Preprocessing
mkdir in &&
ln -s '$in' 'in/${re.sub("[^\w\-_]", "_", $in.element_identifier)}.$gxy2omsext($in.ext)' &&
mkdir database &&
ln -s '$database' 'database/${re.sub("[^\w\-_]", "_", $database.element_identifier)}.$gxy2omsext($database.ext)' &&
#if "out_idXML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  mkdir out_idXML &&
#end if
#if "out_mzIdentML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  mkdir out_mzIdentML &&
#end if
#if "out_xquestxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  mkdir out_xquestxml &&
#end if
#if "out_xquest_specxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  mkdir out_xquest_specxml &&
#end if
#if $adv_opts_cond.adv_opts_selector=='advanced':
  #if $adv_opts_cond.decoy_database:
    mkdir adv_opts_cond.decoy_database &&
    ln -s '$adv_opts_cond.decoy_database' 'adv_opts_cond.decoy_database/${re.sub("[^\w\-_]", "_", $adv_opts_cond.decoy_database.element_identifier)}.$gxy2omsext($adv_opts_cond.decoy_database.ext)' &&
  #end if
#end if

## Main program call

set -o pipefail &&
@EXECUTABLE@ -write_ctd ./ &&
python3 '$__tool_directory__/fill_ctd.py' '@EXECUTABLE@.ctd' '$args_json' '$hardcoded_json' &&
@EXECUTABLE@ -ini @EXECUTABLE@.ctd
-in
'in/${re.sub("[^\w\-_]", "_", $in.element_identifier)}.$gxy2omsext($in.ext)'
-database
'database/${re.sub("[^\w\-_]", "_", $database.element_identifier)}.$gxy2omsext($database.ext)'
#if "out_idXML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  -out_idXML
  'out_idXML/output.${gxy2omsext("idxml")}'
#end if
#if "out_mzIdentML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  -out_mzIdentML
  'out_mzIdentML/output.${gxy2omsext("mzid")}'
#end if
#if "out_xquestxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  -out_xquestxml
  'out_xquestxml/output.${gxy2omsext("xquest.xml")}'
#end if
#if "out_xquest_specxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  -out_xquest_specxml
  'out_xquest_specxml/output.${gxy2omsext("spec.xml")}'
#end if
#if $adv_opts_cond.adv_opts_selector=='advanced':
  #if $adv_opts_cond.decoy_database:
    -decoy_database
    'adv_opts_cond.decoy_database/${re.sub("[^\w\-_]", "_", $adv_opts_cond.decoy_database.element_identifier)}.$gxy2omsext($adv_opts_cond.decoy_database.ext)'
  #end if
#end if
#if len(str($OPTIONAL_OUTPUTS).split(',')) == 0
  | tee '$stdout'
#end if

## Postprocessing
#if "out_idXML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  && mv 'out_idXML/output.${gxy2omsext("idxml")}' '$out_idXML'
#end if
#if "out_mzIdentML_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  && mv 'out_mzIdentML/output.${gxy2omsext("mzid")}' '$out_mzIdentML'
#end if
#if "out_xquestxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  && mv 'out_xquestxml/output.${gxy2omsext("xquest.xml")}' '$out_xquestxml'
#end if
#if "out_xquest_specxml_FLAG" in str($OPTIONAL_OUTPUTS).split(',')
  && mv 'out_xquest_specxml/output.${gxy2omsext("spec.xml")}' '$out_xquest_specxml'
#end if
#if "ctd_out_FLAG" in $OPTIONAL_OUTPUTS
  && mv '@EXECUTABLE@.ctd' '$ctd_out'
#end if]]></command>
  <configfiles>
    <inputs name="args_json" data_style="paths"/>
    <configfile name="hardcoded_json"><![CDATA[{"log": "log.txt", "threads": "\${GALAXY_SLOTS:-1}", "no_progress": true}]]></configfile>
  </configfiles>
  <inputs>
    <param name="in" argument="-in" type="data" format="mzml" optional="false" label="Input file containing the spectra" help=" select mzml data sets(s)"/>
    <param name="database" argument="-database" type="data" format="fasta" optional="false" label="Input file containing the protein database" help=" select fasta data sets(s)"/>
    <param name="decoy_string" argument="-decoy_string" type="text" optional="true" value="DECOY_" label="String that was appended (or prefixed - see 'prefix' flag below) to the accessions in the protein database to indicate decoy proteins" help="">
      <expand macro="list_string_san"/>
    </param>
    <param name="decoy_prefix" argument="-decoy_prefix" type="boolean" truevalue="true" falsevalue="false" checked="true" label="Set to true, if the decoy_string is a prefix of accessions in the protein database" help="Otherwise it is a suffix"/>
    <section name="precursor" title="Precursor filtering settings" help="" expanded="false">
      <param name="mass_tolerance" argument="-precursor:mass_tolerance" type="float" optional="true" value="10.0" label="Width of precursor mass tolerance window" help=""/>
      <param name="mass_tolerance_unit" argument="-precursor:mass_tolerance_unit" display="radio" type="select" optional="false" label="Unit of precursor mass tolerance" help="">
        <option value="ppm" selected="true">ppm</option>
        <option value="Da">Da</option>
        <expand macro="list_string_san"/>
      </param>
      <param name="min_charge" argument="-precursor:min_charge" type="integer" optional="true" value="3" label="Minimum precursor charge to be considered" help=""/>
      <param name="max_charge" argument="-precursor:max_charge" type="integer" optional="true" value="7" label="Maximum precursor charge to be considered" help=""/>
      <param name="corrections" argument="-precursor:corrections" type="text" optional="true" value="2 1 0" label="Monoisotopic peak correction" help="Matches candidates for possible monoisotopic precursor peaks for experimental mass m and given numbers n at masses (m - n * (C13-C12)). These should be ordered from more extreme to less extreme corrections. Numbers later in the list will be preferred in case of ambiguities (space separated list, in order to allow for spaces in list items surround them by single quotes)">
        <expand macro="list_integer_valsan"/>
      </param>
    </section>
    <section name="fragment" title="Fragment peak matching settings" help="" expanded="false">
      <param name="mass_tolerance" argument="-fragment:mass_tolerance" type="float" optional="true" value="20.0" label="Fragment mass tolerance" help=""/>
      <param name="mass_tolerance_xlinks" argument="-fragment:mass_tolerance_xlinks" type="float" optional="true" value="20.0" label="Fragment mass tolerance for cross-link ions" help=""/>
      <param name="mass_tolerance_unit" argument="-fragment:mass_tolerance_unit" display="radio" type="select" optional="false" label="Unit of fragment m" help="">
        <option value="ppm" selected="true">ppm</option>
        <option value="Da">Da</option>
        <expand macro="list_string_san"/>
      </param>
    </section>
    <section name="modifications" title="Peptide modification settings" help="" expanded="false">
      <param name="fixed" argument="-modifications:fixed" multiple="true" type="select" optional="true" label="Fixed modifications, specified using UniMod (www.unimod.org) terms" help="e.g. 'Carbamidomethyl (C)'">
        <option value="">default (nothing chosen)</option>
        <option value="15N-oxobutanoic (N-term C)">15N-oxobutanoic (N-term C)</option>
        <option value="15N-oxobutanoic (Protein N-term S)">15N-oxobutanoic (Protein N-term S)</option>
        <option value="15N-oxobutanoic (Protein N-term T)">15N-oxobutanoic (Protein N-term T)</option>
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (Protein N-term)">Acetyl (Protein N-term)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:13C(2) (Protein N-term)">Acetyl:13C(2) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (Protein N-term)">Acetyl:2H(3) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="ADP-Ribosyl (T)">ADP-Ribosyl (T)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (Protein N-term)">AEBS (Protein N-term)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidated (Protein C-term)">Amidated (Protein C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonia-loss (Protein N-term S)">Ammonia-loss (Protein N-term S)</option>
        <option value="Ammonia-loss (Protein N-term T)">Ammonia-loss (Protein N-term T)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (Protein N-term)">BDMAPP (Protein N-term)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="beta FNA (C)">beta FNA (C)</option>
        <option value="beta FNA (K)">beta FNA (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-PEO-Amine (Protein C-term)">Biotin-PEO-Amine (Protein C-term)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin-tyramide (Y)">Biotin-tyramide (Y)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21330 (K)">Biotin:Thermo-21330 (K)</option>
        <option value="Biotin:Thermo-21330 (N-term)">Biotin:Thermo-21330 (N-term)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (X)">Biotin:Thermo-21360 (X)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (X)">Biotin:Thermo-33033 (X)</option>
        <option value="Biotin:Thermo-33033-H (X)">Biotin:Thermo-33033-H (X)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="biotinAcrolein298 (Protein N-term)">biotinAcrolein298 (Protein N-term)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMOE (C)">BMOE (C)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Bodipy (C)">Bodipy (C)</option>
        <option value="Brij35 (N-term)">Brij35 (N-term)</option>
        <option value="Brij58 (N-term)">Brij58 (N-term)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CAMthiopropanoyl (Protein N-term)">CAMthiopropanoyl (Protein N-term)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (U)">Carbamidomethyl (U)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (Protein N-term)">Carbamyl (Protein N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (Protein N-term M)">Carboxy (Protein N-term M)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxy-&gt;Thiocarboxy (Protein C-term G)">Carboxy-&gt;Thiocarboxy (Protein C-term G)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxyethylpyrrole (K)">Carboxyethylpyrrole (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (U)">Carboxymethyl (U)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Cu[I] (H)">Cation:Cu[I] (H)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Cation:Zn[II] (H)">Cation:Zn[II] (H)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Chlorpyrifos (S)">Chlorpyrifos (S)</option>
        <option value="Chlorpyrifos (T)">Chlorpyrifos (T)</option>
        <option value="Chlorpyrifos (Y)">Chlorpyrifos (Y)</option>
        <option value="Cholesterol (Protein C-term)">Cholesterol (Protein C-term)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="CUSTOM0 (A)">CUSTOM0 (A)</option>
        <option value="CUSTOM0 (C)">CUSTOM0 (C)</option>
        <option value="CUSTOM0 (C-term)">CUSTOM0 (C-term)</option>
        <option value="CUSTOM0 (D)">CUSTOM0 (D)</option>
        <option value="CUSTOM0 (E)">CUSTOM0 (E)</option>
        <option value="CUSTOM0 (F)">CUSTOM0 (F)</option>
        <option value="CUSTOM0 (G)">CUSTOM0 (G)</option>
        <option value="CUSTOM0 (H)">CUSTOM0 (H)</option>
        <option value="CUSTOM0 (I)">CUSTOM0 (I)</option>
        <option value="CUSTOM0 (K)">CUSTOM0 (K)</option>
        <option value="CUSTOM0 (L)">CUSTOM0 (L)</option>
        <option value="CUSTOM0 (M)">CUSTOM0 (M)</option>
        <option value="CUSTOM0 (N)">CUSTOM0 (N)</option>
        <option value="CUSTOM0 (N-term)">CUSTOM0 (N-term)</option>
        <option value="CUSTOM0 (P)">CUSTOM0 (P)</option>
        <option value="CUSTOM0 (Q)">CUSTOM0 (Q)</option>
        <option value="CUSTOM0 (R)">CUSTOM0 (R)</option>
        <option value="CUSTOM0 (S)">CUSTOM0 (S)</option>
        <option value="CUSTOM0 (T)">CUSTOM0 (T)</option>
        <option value="CUSTOM0 (V)">CUSTOM0 (V)</option>
        <option value="CUSTOM0 (W)">CUSTOM0 (W)</option>
        <option value="CUSTOM0 (Y)">CUSTOM0 (Y)</option>
        <option value="CUSTOM1 (A)">CUSTOM1 (A)</option>
        <option value="CUSTOM1 (C)">CUSTOM1 (C)</option>
        <option value="CUSTOM1 (C-term)">CUSTOM1 (C-term)</option>
        <option value="CUSTOM1 (D)">CUSTOM1 (D)</option>
        <option value="CUSTOM1 (E)">CUSTOM1 (E)</option>
        <option value="CUSTOM1 (F)">CUSTOM1 (F)</option>
        <option value="CUSTOM1 (G)">CUSTOM1 (G)</option>
        <option value="CUSTOM1 (H)">CUSTOM1 (H)</option>
        <option value="CUSTOM1 (I)">CUSTOM1 (I)</option>
        <option value="CUSTOM1 (K)">CUSTOM1 (K)</option>
        <option value="CUSTOM1 (L)">CUSTOM1 (L)</option>
        <option value="CUSTOM1 (M)">CUSTOM1 (M)</option>
        <option value="CUSTOM1 (N)">CUSTOM1 (N)</option>
        <option value="CUSTOM1 (N-term)">CUSTOM1 (N-term)</option>
        <option value="CUSTOM1 (P)">CUSTOM1 (P)</option>
        <option value="CUSTOM1 (Q)">CUSTOM1 (Q)</option>
        <option value="CUSTOM1 (R)">CUSTOM1 (R)</option>
        <option value="CUSTOM1 (S)">CUSTOM1 (S)</option>
        <option value="CUSTOM1 (T)">CUSTOM1 (T)</option>
        <option value="CUSTOM1 (V)">CUSTOM1 (V)</option>
        <option value="CUSTOM1 (W)">CUSTOM1 (W)</option>
        <option value="CUSTOM1 (Y)">CUSTOM1 (Y)</option>
        <option value="CUSTOM2 (A)">CUSTOM2 (A)</option>
        <option value="CUSTOM2 (C)">CUSTOM2 (C)</option>
        <option value="CUSTOM2 (C-term)">CUSTOM2 (C-term)</option>
        <option value="CUSTOM2 (D)">CUSTOM2 (D)</option>
        <option value="CUSTOM2 (E)">CUSTOM2 (E)</option>
        <option value="CUSTOM2 (F)">CUSTOM2 (F)</option>
        <option value="CUSTOM2 (G)">CUSTOM2 (G)</option>
        <option value="CUSTOM2 (H)">CUSTOM2 (H)</option>
        <option value="CUSTOM2 (I)">CUSTOM2 (I)</option>
        <option value="CUSTOM2 (K)">CUSTOM2 (K)</option>
        <option value="CUSTOM2 (L)">CUSTOM2 (L)</option>
        <option value="CUSTOM2 (M)">CUSTOM2 (M)</option>
        <option value="CUSTOM2 (N)">CUSTOM2 (N)</option>
        <option value="CUSTOM2 (N-term)">CUSTOM2 (N-term)</option>
        <option value="CUSTOM2 (P)">CUSTOM2 (P)</option>
        <option value="CUSTOM2 (Q)">CUSTOM2 (Q)</option>
        <option value="CUSTOM2 (R)">CUSTOM2 (R)</option>
        <option value="CUSTOM2 (S)">CUSTOM2 (S)</option>
        <option value="CUSTOM2 (T)">CUSTOM2 (T)</option>
        <option value="CUSTOM2 (V)">CUSTOM2 (V)</option>
        <option value="CUSTOM2 (W)">CUSTOM2 (W)</option>
        <option value="CUSTOM2 (Y)">CUSTOM2 (Y)</option>
        <option value="CUSTOM3 (A)">CUSTOM3 (A)</option>
        <option value="CUSTOM3 (C)">CUSTOM3 (C)</option>
        <option value="CUSTOM3 (C-term)">CUSTOM3 (C-term)</option>
        <option value="CUSTOM3 (D)">CUSTOM3 (D)</option>
        <option value="CUSTOM3 (E)">CUSTOM3 (E)</option>
        <option value="CUSTOM3 (F)">CUSTOM3 (F)</option>
        <option value="CUSTOM3 (G)">CUSTOM3 (G)</option>
        <option value="CUSTOM3 (H)">CUSTOM3 (H)</option>
        <option value="CUSTOM3 (I)">CUSTOM3 (I)</option>
        <option value="CUSTOM3 (K)">CUSTOM3 (K)</option>
        <option value="CUSTOM3 (L)">CUSTOM3 (L)</option>
        <option value="CUSTOM3 (M)">CUSTOM3 (M)</option>
        <option value="CUSTOM3 (N)">CUSTOM3 (N)</option>
        <option value="CUSTOM3 (N-term)">CUSTOM3 (N-term)</option>
        <option value="CUSTOM3 (P)">CUSTOM3 (P)</option>
        <option value="CUSTOM3 (Q)">CUSTOM3 (Q)</option>
        <option value="CUSTOM3 (R)">CUSTOM3 (R)</option>
        <option value="CUSTOM3 (S)">CUSTOM3 (S)</option>
        <option value="CUSTOM3 (T)">CUSTOM3 (T)</option>
        <option value="CUSTOM3 (V)">CUSTOM3 (V)</option>
        <option value="CUSTOM3 (W)">CUSTOM3 (W)</option>
        <option value="CUSTOM3 (Y)">CUSTOM3 (Y)</option>
        <option value="CUSTOM4 (A)">CUSTOM4 (A)</option>
        <option value="CUSTOM4 (C)">CUSTOM4 (C)</option>
        <option value="CUSTOM4 (C-term)">CUSTOM4 (C-term)</option>
        <option value="CUSTOM4 (D)">CUSTOM4 (D)</option>
        <option value="CUSTOM4 (E)">CUSTOM4 (E)</option>
        <option value="CUSTOM4 (F)">CUSTOM4 (F)</option>
        <option value="CUSTOM4 (G)">CUSTOM4 (G)</option>
        <option value="CUSTOM4 (H)">CUSTOM4 (H)</option>
        <option value="CUSTOM4 (I)">CUSTOM4 (I)</option>
        <option value="CUSTOM4 (K)">CUSTOM4 (K)</option>
        <option value="CUSTOM4 (L)">CUSTOM4 (L)</option>
        <option value="CUSTOM4 (M)">CUSTOM4 (M)</option>
        <option value="CUSTOM4 (N)">CUSTOM4 (N)</option>
        <option value="CUSTOM4 (N-term)">CUSTOM4 (N-term)</option>
        <option value="CUSTOM4 (P)">CUSTOM4 (P)</option>
        <option value="CUSTOM4 (Q)">CUSTOM4 (Q)</option>
        <option value="CUSTOM4 (R)">CUSTOM4 (R)</option>
        <option value="CUSTOM4 (S)">CUSTOM4 (S)</option>
        <option value="CUSTOM4 (T)">CUSTOM4 (T)</option>
        <option value="CUSTOM4 (V)">CUSTOM4 (V)</option>
        <option value="CUSTOM4 (W)">CUSTOM4 (W)</option>
        <option value="CUSTOM4 (Y)">CUSTOM4 (Y)</option>
        <option value="CUSTOM5 (A)">CUSTOM5 (A)</option>
        <option value="CUSTOM5 (C)">CUSTOM5 (C)</option>
        <option value="CUSTOM5 (C-term)">CUSTOM5 (C-term)</option>
        <option value="CUSTOM5 (D)">CUSTOM5 (D)</option>
        <option value="CUSTOM5 (E)">CUSTOM5 (E)</option>
        <option value="CUSTOM5 (F)">CUSTOM5 (F)</option>
        <option value="CUSTOM5 (G)">CUSTOM5 (G)</option>
        <option value="CUSTOM5 (H)">CUSTOM5 (H)</option>
        <option value="CUSTOM5 (I)">CUSTOM5 (I)</option>
        <option value="CUSTOM5 (K)">CUSTOM5 (K)</option>
        <option value="CUSTOM5 (L)">CUSTOM5 (L)</option>
        <option value="CUSTOM5 (M)">CUSTOM5 (M)</option>
        <option value="CUSTOM5 (N)">CUSTOM5 (N)</option>
        <option value="CUSTOM5 (N-term)">CUSTOM5 (N-term)</option>
        <option value="CUSTOM5 (P)">CUSTOM5 (P)</option>
        <option value="CUSTOM5 (Q)">CUSTOM5 (Q)</option>
        <option value="CUSTOM5 (R)">CUSTOM5 (R)</option>
        <option value="CUSTOM5 (S)">CUSTOM5 (S)</option>
        <option value="CUSTOM5 (T)">CUSTOM5 (T)</option>
        <option value="CUSTOM5 (V)">CUSTOM5 (V)</option>
        <option value="CUSTOM5 (W)">CUSTOM5 (W)</option>
        <option value="CUSTOM5 (Y)">CUSTOM5 (Y)</option>
        <option value="CUSTOM6 (A)">CUSTOM6 (A)</option>
        <option value="CUSTOM6 (C)">CUSTOM6 (C)</option>
        <option value="CUSTOM6 (C-term)">CUSTOM6 (C-term)</option>
        <option value="CUSTOM6 (D)">CUSTOM6 (D)</option>
        <option value="CUSTOM6 (E)">CUSTOM6 (E)</option>
        <option value="CUSTOM6 (F)">CUSTOM6 (F)</option>
        <option value="CUSTOM6 (G)">CUSTOM6 (G)</option>
        <option value="CUSTOM6 (H)">CUSTOM6 (H)</option>
        <option value="CUSTOM6 (I)">CUSTOM6 (I)</option>
        <option value="CUSTOM6 (K)">CUSTOM6 (K)</option>
        <option value="CUSTOM6 (L)">CUSTOM6 (L)</option>
        <option value="CUSTOM6 (M)">CUSTOM6 (M)</option>
        <option value="CUSTOM6 (N)">CUSTOM6 (N)</option>
        <option value="CUSTOM6 (N-term)">CUSTOM6 (N-term)</option>
        <option value="CUSTOM6 (P)">CUSTOM6 (P)</option>
        <option value="CUSTOM6 (Q)">CUSTOM6 (Q)</option>
        <option value="CUSTOM6 (R)">CUSTOM6 (R)</option>
        <option value="CUSTOM6 (S)">CUSTOM6 (S)</option>
        <option value="CUSTOM6 (T)">CUSTOM6 (T)</option>
        <option value="CUSTOM6 (V)">CUSTOM6 (V)</option>
        <option value="CUSTOM6 (W)">CUSTOM6 (W)</option>
        <option value="CUSTOM6 (Y)">CUSTOM6 (Y)</option>
        <option value="CUSTOM7 (A)">CUSTOM7 (A)</option>
        <option value="CUSTOM7 (C)">CUSTOM7 (C)</option>
        <option value="CUSTOM7 (C-term)">CUSTOM7 (C-term)</option>
        <option value="CUSTOM7 (D)">CUSTOM7 (D)</option>
        <option value="CUSTOM7 (E)">CUSTOM7 (E)</option>
        <option value="CUSTOM7 (F)">CUSTOM7 (F)</option>
        <option value="CUSTOM7 (G)">CUSTOM7 (G)</option>
        <option value="CUSTOM7 (H)">CUSTOM7 (H)</option>
        <option value="CUSTOM7 (I)">CUSTOM7 (I)</option>
        <option value="CUSTOM7 (K)">CUSTOM7 (K)</option>
        <option value="CUSTOM7 (L)">CUSTOM7 (L)</option>
        <option value="CUSTOM7 (M)">CUSTOM7 (M)</option>
        <option value="CUSTOM7 (N)">CUSTOM7 (N)</option>
        <option value="CUSTOM7 (N-term)">CUSTOM7 (N-term)</option>
        <option value="CUSTOM7 (P)">CUSTOM7 (P)</option>
        <option value="CUSTOM7 (Q)">CUSTOM7 (Q)</option>
        <option value="CUSTOM7 (R)">CUSTOM7 (R)</option>
        <option value="CUSTOM7 (S)">CUSTOM7 (S)</option>
        <option value="CUSTOM7 (T)">CUSTOM7 (T)</option>
        <option value="CUSTOM7 (V)">CUSTOM7 (V)</option>
        <option value="CUSTOM7 (W)">CUSTOM7 (W)</option>
        <option value="CUSTOM7 (Y)">CUSTOM7 (Y)</option>
        <option value="CUSTOM8 (A)">CUSTOM8 (A)</option>
        <option value="CUSTOM8 (C)">CUSTOM8 (C)</option>
        <option value="CUSTOM8 (C-term)">CUSTOM8 (C-term)</option>
        <option value="CUSTOM8 (D)">CUSTOM8 (D)</option>
        <option value="CUSTOM8 (E)">CUSTOM8 (E)</option>
        <option value="CUSTOM8 (F)">CUSTOM8 (F)</option>
        <option value="CUSTOM8 (G)">CUSTOM8 (G)</option>
        <option value="CUSTOM8 (H)">CUSTOM8 (H)</option>
        <option value="CUSTOM8 (I)">CUSTOM8 (I)</option>
        <option value="CUSTOM8 (K)">CUSTOM8 (K)</option>
        <option value="CUSTOM8 (L)">CUSTOM8 (L)</option>
        <option value="CUSTOM8 (M)">CUSTOM8 (M)</option>
        <option value="CUSTOM8 (N)">CUSTOM8 (N)</option>
        <option value="CUSTOM8 (N-term)">CUSTOM8 (N-term)</option>
        <option value="CUSTOM8 (P)">CUSTOM8 (P)</option>
        <option value="CUSTOM8 (Q)">CUSTOM8 (Q)</option>
        <option value="CUSTOM8 (R)">CUSTOM8 (R)</option>
        <option value="CUSTOM8 (S)">CUSTOM8 (S)</option>
        <option value="CUSTOM8 (T)">CUSTOM8 (T)</option>
        <option value="CUSTOM8 (V)">CUSTOM8 (V)</option>
        <option value="CUSTOM8 (W)">CUSTOM8 (W)</option>
        <option value="CUSTOM8 (Y)">CUSTOM8 (Y)</option>
        <option value="CUSTOM9 (A)">CUSTOM9 (A)</option>
        <option value="CUSTOM9 (C)">CUSTOM9 (C)</option>
        <option value="CUSTOM9 (C-term)">CUSTOM9 (C-term)</option>
        <option value="CUSTOM9 (D)">CUSTOM9 (D)</option>
        <option value="CUSTOM9 (E)">CUSTOM9 (E)</option>
        <option value="CUSTOM9 (F)">CUSTOM9 (F)</option>
        <option value="CUSTOM9 (G)">CUSTOM9 (G)</option>
        <option value="CUSTOM9 (H)">CUSTOM9 (H)</option>
        <option value="CUSTOM9 (I)">CUSTOM9 (I)</option>
        <option value="CUSTOM9 (K)">CUSTOM9 (K)</option>
        <option value="CUSTOM9 (L)">CUSTOM9 (L)</option>
        <option value="CUSTOM9 (M)">CUSTOM9 (M)</option>
        <option value="CUSTOM9 (N)">CUSTOM9 (N)</option>
        <option value="CUSTOM9 (N-term)">CUSTOM9 (N-term)</option>
        <option value="CUSTOM9 (P)">CUSTOM9 (P)</option>
        <option value="CUSTOM9 (Q)">CUSTOM9 (Q)</option>
        <option value="CUSTOM9 (R)">CUSTOM9 (R)</option>
        <option value="CUSTOM9 (S)">CUSTOM9 (S)</option>
        <option value="CUSTOM9 (T)">CUSTOM9 (T)</option>
        <option value="CUSTOM9 (V)">CUSTOM9 (V)</option>
        <option value="CUSTOM9 (W)">CUSTOM9 (W)</option>
        <option value="CUSTOM9 (Y)">CUSTOM9 (Y)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;CamSec (C)">Cys-&gt;CamSec (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;PyruvicAcid (Protein N-term C)">Cys-&gt;PyruvicAcid (Protein N-term C)</option>
        <option value="Cys-&gt;SecNEM (C)">Cys-&gt;SecNEM (C)</option>
        <option value="Cys-&gt;SecNEM:2H(5) (C)">Cys-&gt;SecNEM:2H(5) (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Protein N-term F)">Deamidated (Protein N-term F)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (Protein C-term N)">Dehydrated (Protein C-term N)</option>
        <option value="Dehydrated (Protein C-term Q)">Dehydrated (Protein C-term Q)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(1)N(-1)18O(1) (N)">Delta:H(1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(2) (Protein N-term)">Delta:H(2)C(2) (Protein N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3) (Protein N-term)">Delta:H(4)C(3) (Protein N-term)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(3)O(1) (Protein N-term)">Delta:H(6)C(3)O(1) (Protein N-term)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (K)">Delta:H(8)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (Protein N-term)">Delta:H(8)C(6)O(1) (Protein N-term)</option>
        <option value="Delta:H(8)C(6)O(2) (K)">Delta:H(8)C(6)O(2) (K)</option>
        <option value="Delta:Hg(1) (C)">Delta:Hg(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (C)">Delta:S(-1)Se(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (M)">Delta:S(-1)Se(1) (M)</option>
        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
        <option value="Deoxy (D)">Deoxy (D)</option>
        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
        <option value="Deoxyhypusine (K)">Deoxyhypusine (K)</option>
        <option value="Deoxyhypusine (Q)">Deoxyhypusine (Q)</option>
        <option value="DeStreak (C)">DeStreak (C)</option>
        <option value="Dethiomethyl (M)">Dethiomethyl (M)</option>
        <option value="DFDNB (K)">DFDNB (K)</option>
        <option value="DFDNB (N)">DFDNB (N)</option>
        <option value="DFDNB (Q)">DFDNB (Q)</option>
        <option value="DFDNB (R)">DFDNB (R)</option>
        <option value="dHex (N)">dHex (N)</option>
        <option value="dHex (S)">dHex (S)</option>
        <option value="dHex (T)">dHex (T)</option>
        <option value="dHex(1)Hex(1) (S)">dHex(1)Hex(1) (S)</option>
        <option value="dHex(1)Hex(1) (T)">dHex(1)Hex(1) (T)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (S)">dHex(1)Hex(1)HexA(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (T)">dHex(1)Hex(1)HexA(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (S)">dHex(1)Hex(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (T)">dHex(1)Hex(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (S)">dHex(1)Hex(1)HexNAc(4) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (T)">dHex(1)Hex(1)HexNAc(4) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
        <option value="dHex(1)Hex(2) (T)">dHex(1)Hex(2) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1) (S)">dHex(1)Hex(2)HexA(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1) (T)">dHex(1)Hex(2)HexA(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (S)">dHex(1)Hex(2)HexA(1)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (T)">dHex(1)Hex(2)HexA(1)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (S)">dHex(1)Hex(2)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (T)">dHex(1)Hex(2)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Pent(1) (N)">dHex(1)Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(3) (N)">dHex(1)Hex(2)HexNAc(3) (N)</option>
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        <option value="dHex(2)Hex(2)HexNAc(1) (T)">dHex(2)Hex(2)HexNAc(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2) (N)">dHex(2)Hex(2)HexNAc(2) (N)</option>
        <option value="dHex(2)Hex(2)HexNAc(2) (S)">dHex(2)Hex(2)HexNAc(2) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2) (T)">dHex(2)Hex(2)HexNAc(2) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(2)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(2)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuAc(1) (S)">dHex(2)Hex(2)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuAc(1) (T)">dHex(2)Hex(2)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(2)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(2)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuGc(1) (S)">dHex(2)Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)NeuGc(1) (T)">dHex(2)Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Sulf(1) (S)">dHex(2)Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Sulf(1) (T)">dHex(2)Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Sulf(2) (S)">dHex(2)Hex(2)HexNAc(2)Sulf(2) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(2)Sulf(2) (T)">dHex(2)Hex(2)HexNAc(2)Sulf(2) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(3) (N)">dHex(2)Hex(2)HexNAc(3) (N)</option>
        <option value="dHex(2)Hex(2)HexNAc(3) (S)">dHex(2)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(3) (T)">dHex(2)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)NeuAc(1) (S)">dHex(2)Hex(2)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)NeuAc(1) (T)">dHex(2)Hex(2)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)NeuGc(1) (S)">dHex(2)Hex(2)HexNAc(3)NeuGc(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)NeuGc(1) (T)">dHex(2)Hex(2)HexNAc(3)NeuGc(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)Sulf(1) (S)">dHex(2)Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(3)Sulf(1) (T)">dHex(2)Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(4) (S)">dHex(2)Hex(2)HexNAc(4) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(4) (T)">dHex(2)Hex(2)HexNAc(4) (T)</option>
        <option value="dHex(2)Hex(2)HexNAc(5) (S)">dHex(2)Hex(2)HexNAc(5) (S)</option>
        <option value="dHex(2)Hex(2)HexNAc(5) (T)">dHex(2)Hex(2)HexNAc(5) (T)</option>
        <option value="dHex(2)Hex(3) (S)">dHex(2)Hex(3) (S)</option>
        <option value="dHex(2)Hex(3) (T)">dHex(2)Hex(3) (T)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(2)Hex(3)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(2)Hex(3)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(2)Sulf(1) (S)">dHex(2)Hex(3)HexA(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(2)Sulf(1) (T)">dHex(2)Hex(3)HexA(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(3)Sulf(1) (S)">dHex(2)Hex(3)HexA(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(3)HexA(1)HexNAc(3)Sulf(1) (T)">dHex(2)Hex(3)HexA(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(1)Sulf(1) (S)">dHex(2)Hex(3)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(1)Sulf(1) (T)">dHex(2)Hex(3)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(2) (N)">dHex(2)Hex(3)HexNAc(2) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(2) (S)">dHex(2)Hex(3)HexNAc(2) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(2) (T)">dHex(2)Hex(3)HexNAc(2) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(2)NeuGc(1) (S)">dHex(2)Hex(3)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(2)NeuGc(1) (T)">dHex(2)Hex(3)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(2)Sulf(1) (S)">dHex(2)Hex(3)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(2)Sulf(1) (T)">dHex(2)Hex(3)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(3) (N)">dHex(2)Hex(3)HexNAc(3) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(3) (S)">dHex(2)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(3) (T)">dHex(2)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuAc(1) (S)">dHex(2)Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuAc(1) (T)">dHex(2)Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuAc(2) (S)">dHex(2)Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuAc(2) (T)">dHex(2)Hex(3)HexNAc(3)NeuAc(2) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuGc(1) (S)">dHex(2)Hex(3)HexNAc(3)NeuGc(1) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)NeuGc(1) (T)">dHex(2)Hex(3)HexNAc(3)NeuGc(1) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)Pent(1) (N)">dHex(2)Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(3)Pent(2) (N)">dHex(2)Hex(3)HexNAc(3)Pent(2) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(4) (N)">dHex(2)Hex(3)HexNAc(4) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(4) (S)">dHex(2)Hex(3)HexNAc(4) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(4) (T)">dHex(2)Hex(3)HexNAc(4) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(4)Pent(1) (N)">dHex(2)Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(4)Pent(2) (N)">dHex(2)Hex(3)HexNAc(4)Pent(2) (N)</option>
        <option value="dHex(2)Hex(3)HexNAc(5) (S)">dHex(2)Hex(3)HexNAc(5) (S)</option>
        <option value="dHex(2)Hex(3)HexNAc(5) (T)">dHex(2)Hex(3)HexNAc(5) (T)</option>
        <option value="dHex(2)Hex(3)HexNAc(6) (N)">dHex(2)Hex(3)HexNAc(6) (N)</option>
        <option value="dHex(2)Hex(4) (S)">dHex(2)Hex(4) (S)</option>
        <option value="dHex(2)Hex(4) (T)">dHex(2)Hex(4) (T)</option>
        <option value="dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (S)">dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)">dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(2)Hex(4)HexNAc(1) (S)">dHex(2)Hex(4)HexNAc(1) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(1) (T)">dHex(2)Hex(4)HexNAc(1) (T)</option>
        <option value="dHex(2)Hex(4)HexNAc(2) (N)">dHex(2)Hex(4)HexNAc(2) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(2) (S)">dHex(2)Hex(4)HexNAc(2) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(2) (T)">dHex(2)Hex(4)HexNAc(2) (T)</option>
        <option value="dHex(2)Hex(4)HexNAc(3) (N)">dHex(2)Hex(4)HexNAc(3) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(3)NeuAc(1)Sulf(1) (N)">dHex(2)Hex(4)HexNAc(3)NeuAc(1)Sulf(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(3)Pent(1) (N)">dHex(2)Hex(4)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(4) (N)">dHex(2)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(4) (S)">dHex(2)Hex(4)HexNAc(4) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(4) (T)">dHex(2)Hex(4)HexNAc(4) (T)</option>
        <option value="dHex(2)Hex(4)HexNAc(4)Pent(1) (N)">dHex(2)Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(4)Sulf(1) (N)">dHex(2)Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (N)">dHex(2)Hex(4)HexNAc(5) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (S)">dHex(2)Hex(4)HexNAc(5) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (T)">dHex(2)Hex(4)HexNAc(5) (T)</option>
        <option value="dHex(2)Hex(5)HexNAc(3)Pent(1) (N)">dHex(2)Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(2)Hex(5)HexNAc(4) (N)">dHex(2)Hex(5)HexNAc(4) (N)</option>
        <option value="dHex(2)HexNAc(2)Kdn(1) (S)">dHex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(2)HexNAc(2)Kdn(1) (T)">dHex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(2)HexNAc(5) (S)">dHex(2)HexNAc(5) (S)</option>
        <option value="dHex(2)HexNAc(5) (T)">dHex(2)HexNAc(5) (T)</option>
        <option value="dHex(2)HexNAc(7) (S)">dHex(2)HexNAc(7) (S)</option>
        <option value="dHex(2)HexNAc(7) (T)">dHex(2)HexNAc(7) (T)</option>
        <option value="dHex(3)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(3)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(3)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(1)HexNAc(3)Kdn(1) (S)">dHex(3)Hex(1)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(1)HexNAc(3)Kdn(1) (T)">dHex(3)Hex(1)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (S)">dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (T)">dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(2) (S)">dHex(3)Hex(2)HexNAc(2) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(2) (T)">dHex(3)Hex(2)HexNAc(2) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(3)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(3)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(3) (S)">dHex(3)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(3) (T)">dHex(3)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(3)Kdn(1) (S)">dHex(3)Hex(2)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(3)Kdn(1) (T)">dHex(3)Hex(2)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(4) (S)">dHex(3)Hex(2)HexNAc(4) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(4) (T)">dHex(3)Hex(2)HexNAc(4) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3) (S)">dHex(3)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(3)Hex(3)HexNAc(3) (T)">dHex(3)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)NeuAc(1) (S)">dHex(3)Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)NeuAc(1) (T)">dHex(3)Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)Pent(1) (N)">dHex(3)Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(3)Hex(3)HexNAc(4) (N)">dHex(3)Hex(3)HexNAc(4) (N)</option>
        <option value="dHex(3)Hex(3)HexNAc(4)Pent(1) (N)">dHex(3)Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (N)">dHex(3)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (S)">dHex(3)Hex(4)HexNAc(4) (S)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (T)">dHex(3)Hex(4)HexNAc(4) (T)</option>
        <option value="dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)">dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (S)">dHex(3)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (T)">dHex(3)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (S)">dHex(4)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (T)">dHex(4)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (S)">dHex(4)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (T)">dHex(4)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (S)">dHex(4)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (T)">dHex(4)HexNAc(3)Kdn(1) (T)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Protein N-term)">DiART6plex (Protein N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Protein N-term)">DiART6plex115 (Protein N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Protein N-term)">DiART6plex116/119 (Protein N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Protein N-term)">DiART6plex117 (Protein N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Protein N-term)">DiART6plex118 (Protein N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (Protein N-term P)">Dimethyl (Protein N-term P)</option>
        <option value="Dimethyl (Protein N-term)">Dimethyl (Protein N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(2)13C (K)">Dimethyl:2H(2)13C (K)</option>
        <option value="Dimethyl:2H(2)13C (N)">Dimethyl:2H(2)13C (N)</option>
        <option value="Dimethyl:2H(2)13C (N-term)">Dimethyl:2H(2)13C (N-term)</option>
        <option value="Dimethyl:2H(2)13C (Protein N-term P)">Dimethyl:2H(2)13C (Protein N-term P)</option>
        <option value="Dimethyl:2H(2)13C (R)">Dimethyl:2H(2)13C (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4) (Protein N-term)">Dimethyl:2H(4) (Protein N-term)</option>
        <option value="Dimethyl:2H(4) (R)">Dimethyl:2H(4) (R)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (Protein N-term)">Dimethyl:2H(4)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (R)">Dimethyl:2H(4)13C(2) (R)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (Protein N-term)">Dimethyl:2H(6)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (U)">Dioxidation (U)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTBP (K)">DTBP (K)</option>
        <option value="DTBP (N)">DTBP (N)</option>
        <option value="DTBP (Protein N-term)">DTBP (Protein N-term)</option>
        <option value="DTBP (Q)">DTBP (Q)</option>
        <option value="DTBP (R)">DTBP (R)</option>
        <option value="DTT_C (C)">DTT_C (C)</option>
        <option value="DTT_C:2H(6) (C)">DTT_C:2H(6) (C)</option>
        <option value="DTT_ST (S)">DTT_ST (S)</option>
        <option value="DTT_ST (T)">DTT_ST (T)</option>
        <option value="DTT_ST:2H(6) (S)">DTT_ST:2H(6) (S)</option>
        <option value="DTT_ST:2H(6) (T)">DTT_ST:2H(6) (T)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethoxyformyl (H)">Ethoxyformyl (H)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl (Protein N-term)">Ethyl (Protein N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluorescein-tyramine (Y)">Fluorescein-tyramine (Y)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (Protein N-term)">Formyl (Protein N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="FormylMet (Protein N-term)">FormylMet (Protein N-term)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="Galactosyl (N-term)">Galactosyl (N-term)</option>
        <option value="GEE (Q)">GEE (Q)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu (Protein C-term)">Glu (Protein C-term)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (Protein N-term)">Glucuronyl (Protein N-term)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glucuronyl (T)">Glucuronyl (T)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGlu (Protein C-term)">GluGlu (Protein C-term)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGlu (Protein C-term)">GluGluGlu (Protein C-term)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="GluGluGluGlu (Protein C-term)">GluGluGluGlu (Protein C-term)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="GPIanchor (Protein C-term)">GPIanchor (Protein C-term)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexA(1) (S)">Hex(1)HexA(1) (S)</option>
        <option value="Hex(1)HexA(1) (T)">Hex(1)HexA(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (S)">Hex(1)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (T)">Hex(1)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (S)">Hex(1)HexA(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (T)">Hex(1)HexA(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1) (N)">Hex(1)HexNAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1) (S)">Hex(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1) (T)">Hex(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (S)">Hex(1)HexNAc(1)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (T)">Hex(1)HexNAc(1)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (S)">Hex(1)HexNAc(1)dHex(1)Me(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (T)">Hex(1)HexNAc(1)dHex(1)Me(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (S)">Hex(1)HexNAc(1)dHex(1)Me(2) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (T)">Hex(1)HexNAc(1)dHex(1)Me(2) (T)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (S)">Hex(1)HexNAc(1)NeuAc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (T)">Hex(1)HexNAc(1)NeuAc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (S)">Hex(1)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (T)">Hex(1)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (S)">Hex(1)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (T)">Hex(1)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (S)">Hex(1)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (T)">Hex(1)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (S)">Hex(1)HexNAc(1)NeuGc(5) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (T)">Hex(1)HexNAc(1)NeuGc(5) (T)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (S)">Hex(1)HexNAc(1)Phos(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (T)">Hex(1)HexNAc(1)Phos(1) (T)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2) (S)">Hex(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2) (T)">Hex(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (S)">Hex(1)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (T)">Hex(1)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (S)">Hex(1)HexNAc(2)dHex(2) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (T)">Hex(1)HexNAc(2)dHex(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (S)">Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (T)">Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (S)">Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (T)">Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (S)">Hex(1)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (T)">Hex(1)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(3) (S)">Hex(1)HexNAc(3) (S)</option>
        <option value="Hex(1)HexNAc(3) (T)">Hex(1)HexNAc(3) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (S)">Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (T)">Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (S)">Hex(1)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (T)">Hex(1)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (S)">Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (T)">Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (S)">Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (T)">Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(1)NeuAc(1) (S)">Hex(1)NeuAc(1) (S)</option>
        <option value="Hex(1)NeuAc(1) (T)">Hex(1)NeuAc(1) (T)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (S)">Hex(1)NeuAc(1)Pent(1) (S)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (T)">Hex(1)NeuAc(1)Pent(1) (T)</option>
        <option value="Hex(1)NeuGc(1) (S)">Hex(1)NeuGc(1) (S)</option>
        <option value="Hex(1)NeuGc(1) (T)">Hex(1)NeuGc(1) (T)</option>
        <option value="Hex(1)Pent(1) (S)">Hex(1)Pent(1) (S)</option>
        <option value="Hex(1)Pent(1) (T)">Hex(1)Pent(1) (T)</option>
        <option value="Hex(1)Pent(2) (S)">Hex(1)Pent(2) (S)</option>
        <option value="Hex(1)Pent(2) (T)">Hex(1)Pent(2) (T)</option>
        <option value="Hex(10)Phos(3) (S)">Hex(10)Phos(3) (S)</option>
        <option value="Hex(10)Phos(3) (T)">Hex(10)Phos(3) (T)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(1) (S)">Hex(2)HexNAc(1) (S)</option>
        <option value="Hex(2)HexNAc(1) (T)">Hex(2)HexNAc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (S)">Hex(2)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (T)">Hex(2)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (S)">Hex(2)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (T)">Hex(2)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (S)">Hex(2)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (T)">Hex(2)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (S)">Hex(2)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (T)">Hex(2)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (S)">Hex(2)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (T)">Hex(2)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (S)">Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (T)">Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2) (S)">Hex(2)HexNAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2) (T)">Hex(2)HexNAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (S)">Hex(2)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (T)">Hex(2)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (N)">Hex(2)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (S)">Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (T)">Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (S)">Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (T)">Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3) (S)">Hex(2)HexNAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3) (T)">Hex(2)HexNAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (S)">Hex(2)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (T)">Hex(2)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (S)">Hex(2)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (T)">Hex(2)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (S)">Hex(2)HexNAc(3)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (T)">Hex(2)HexNAc(3)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (S)">Hex(2)HexNAc(3)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (T)">Hex(2)HexNAc(3)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (S)">Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (T)">Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(4) (S)">Hex(2)HexNAc(4) (S)</option>
        <option value="Hex(2)HexNAc(4) (T)">Hex(2)HexNAc(4) (T)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (S)">Hex(2)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (T)">Hex(2)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(5) (S)">Hex(2)HexNAc(5) (S)</option>
        <option value="Hex(2)HexNAc(5) (T)">Hex(2)HexNAc(5) (T)</option>
        <option value="Hex(2)NeuAc(1) (S)">Hex(2)NeuAc(1) (S)</option>
        <option value="Hex(2)NeuAc(1) (T)">Hex(2)NeuAc(1) (T)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3) (S)">Hex(3) (S)</option>
        <option value="Hex(3) (T)">Hex(3) (T)</option>
        <option value="Hex(3)HexNAc(1) (S)">Hex(3)HexNAc(1) (S)</option>
        <option value="Hex(3)HexNAc(1) (T)">Hex(3)HexNAc(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (S)">Hex(3)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (T)">Hex(3)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2) (S)">Hex(3)HexNAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2) (T)">Hex(3)HexNAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(1) (N)">Hex(3)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (S)">Hex(3)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (T)">Hex(3)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)Pent(1) (N)">Hex(3)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2)Phos(1) (N)">Hex(3)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(3)HexNAc(3) (N)">Hex(3)HexNAc(3) (N)</option>
        <option value="Hex(3)HexNAc(3) (S)">Hex(3)HexNAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3) (T)">Hex(3)HexNAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (S)">Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (T)">Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (S)">Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (T)">Hex(3)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (S)">Hex(3)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (T)">Hex(3)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)Pent(1) (N)">Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (S)">Hex(3)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (T)">Hex(3)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(3)HexNAc(4) (S)">Hex(3)HexNAc(4) (S)</option>
        <option value="Hex(3)HexNAc(4) (T)">Hex(3)HexNAc(4) (T)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(1) (N)">Hex(3)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Pent(1) (N)">Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Sulf(1) (N)">Hex(3)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(5) (N)">Hex(3)HexNAc(5) (N)</option>
        <option value="Hex(3)HexNAc(5) (S)">Hex(3)HexNAc(5) (S)</option>
        <option value="Hex(3)HexNAc(5) (T)">Hex(3)HexNAc(5) (T)</option>
        <option value="Hex(3)HexNAc(5)Sulf(1) (N)">Hex(3)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6) (N)">Hex(3)HexNAc(6) (N)</option>
        <option value="Hex(3)HexNAc(6) (S)">Hex(3)HexNAc(6) (S)</option>
        <option value="Hex(3)HexNAc(6) (T)">Hex(3)HexNAc(6) (T)</option>
        <option value="Hex(3)HexNAc(6)NeuAc(1) (N)">Hex(3)HexNAc(6)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(1) (N)">Hex(3)HexNAc(6)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(2) (N)">Hex(3)HexNAc(6)Sulf(2) (N)</option>
        <option value="Hex(3)HexNAc(7) (N)">Hex(3)HexNAc(7) (N)</option>
        <option value="Hex(3)HexNAc(7)Sulf(1) (N)">Hex(3)HexNAc(7)Sulf(1) (N)</option>
        <option value="Hex(3)Phos(1) (S)">Hex(3)Phos(1) (S)</option>
        <option value="Hex(3)Phos(1) (T)">Hex(3)Phos(1) (T)</option>
        <option value="Hex(4) (S)">Hex(4) (S)</option>
        <option value="Hex(4) (T)">Hex(4) (T)</option>
        <option value="Hex(4)HexNAc(1) (S)">Hex(4)HexNAc(1) (S)</option>
        <option value="Hex(4)HexNAc(1) (T)">Hex(4)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2) (N)">Hex(4)HexNAc(2) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (N)">Hex(4)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(2)Pent(1) (N)">Hex(4)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(3) (N)">Hex(4)HexNAc(3) (N)</option>
        <option value="Hex(4)HexNAc(3) (S)">Hex(4)HexNAc(3) (S)</option>
        <option value="Hex(4)HexNAc(3) (T)">Hex(4)HexNAc(3) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (N)">Hex(4)HexNAc(3)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (S)">Hex(4)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (T)">Hex(4)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(2) (N)">Hex(4)HexNAc(3)NeuAc(2) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuGc(1) (N)">Hex(4)HexNAc(3)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)Pent(1) (N)">Hex(4)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (S)">Hex(4)HexNAc(4) (S)</option>
        <option value="Hex(4)HexNAc(4) (T)">Hex(4)HexNAc(4) (T)</option>
        <option value="Hex(4)HexNAc(4)Me(2)Pent(1) (N)">Hex(4)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (N)">Hex(4)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (S)">Hex(4)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (T)">Hex(4)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)Pent(1) (N)">Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(1) (N)">Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (S)">Hex(4)HexNAc(4)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (T)">Hex(4)HexNAc(4)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(5) (N)">Hex(4)HexNAc(5) (N)</option>
        <option value="Hex(4)HexNAc(5)NeuAc(1) (N)">Hex(4)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(5)Sulf(1) (N)">Hex(4)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(6) (N)">Hex(4)HexNAc(6) (N)</option>
        <option value="Hex(4)Phos(1) (S)">Hex(4)Phos(1) (S)</option>
        <option value="Hex(4)Phos(1) (T)">Hex(4)Phos(1) (T)</option>
        <option value="Hex(5) (S)">Hex(5) (S)</option>
        <option value="Hex(5) (T)">Hex(5) (T)</option>
        <option value="Hex(5)HexNAc(1) (S)">Hex(5)HexNAc(1) (S)</option>
        <option value="Hex(5)HexNAc(1) (T)">Hex(5)HexNAc(1) (T)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(2)Phos(1) (N)">Hex(5)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(5)HexNAc(3) (N)">Hex(5)HexNAc(3) (N)</option>
        <option value="Hex(5)HexNAc(3)Pent(1) (N)">Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4) (S)">Hex(5)HexNAc(4) (S)</option>
        <option value="Hex(5)HexNAc(4) (T)">Hex(5)HexNAc(4) (T)</option>
        <option value="Hex(5)HexNAc(4)Me(2)Pent(1) (N)">Hex(5)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuGc(1) (N)">Hex(5)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)Sulf(1) (N)">Hex(5)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(5) (N)">Hex(5)HexNAc(5) (N)</option>
        <option value="Hex(5)HexNAc(5) (S)">Hex(5)HexNAc(5) (S)</option>
        <option value="Hex(5)HexNAc(5) (T)">Hex(5)HexNAc(5) (T)</option>
        <option value="Hex(5)Phos(1) (S)">Hex(5)Phos(1) (S)</option>
        <option value="Hex(5)Phos(1) (T)">Hex(5)Phos(1) (T)</option>
        <option value="Hex(5)Phos(3) (S)">Hex(5)Phos(3) (S)</option>
        <option value="Hex(5)Phos(3) (T)">Hex(5)Phos(3) (T)</option>
        <option value="Hex(6)HexNAc(2) (N)">Hex(6)HexNAc(2) (N)</option>
        <option value="Hex(6)HexNAc(2)Phos(1) (N)">Hex(6)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(3) (N)">Hex(6)HexNAc(3) (N)</option>
        <option value="Hex(6)HexNAc(3)Phos(1) (N)">Hex(6)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(4) (N)">Hex(6)HexNAc(4) (N)</option>
        <option value="Hex(6)HexNAc(4) (S)">Hex(6)HexNAc(4) (S)</option>
        <option value="Hex(6)HexNAc(4) (T)">Hex(6)HexNAc(4) (T)</option>
        <option value="Hex(6)HexNAc(4)Me(3) (N)">Hex(6)HexNAc(4)Me(3) (N)</option>
        <option value="Hex(6)HexNAc(4)Me(3)Pent(1) (N)">Hex(6)HexNAc(4)Me(3)Pent(1) (N)</option>
        <option value="Hex(6)HexNAc(5) (N)">Hex(6)HexNAc(5) (N)</option>
        <option value="Hex(6)Phos(1) (S)">Hex(6)Phos(1) (S)</option>
        <option value="Hex(6)Phos(1) (T)">Hex(6)Phos(1) (T)</option>
        <option value="Hex(6)Phos(3) (S)">Hex(6)Phos(3) (S)</option>
        <option value="Hex(6)Phos(3) (T)">Hex(6)Phos(3) (T)</option>
        <option value="Hex(7)HexNAc(1) (N)">Hex(7)HexNAc(1) (N)</option>
        <option value="Hex(7)HexNAc(2) (N)">Hex(7)HexNAc(2) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(1) (N)">Hex(7)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(2) (N)">Hex(7)HexNAc(2)Phos(2) (N)</option>
        <option value="Hex(7)HexNAc(3) (N)">Hex(7)HexNAc(3) (N)</option>
        <option value="Hex(7)HexNAc(3)Phos(1) (N)">Hex(7)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(4) (N)">Hex(7)HexNAc(4) (N)</option>
        <option value="Hex(7)Phos(3) (S)">Hex(7)Phos(3) (S)</option>
        <option value="Hex(7)Phos(3) (T)">Hex(7)Phos(3) (T)</option>
        <option value="Hex(8)HexNAc(1) (N)">Hex(8)HexNAc(1) (N)</option>
        <option value="Hex(8)HexNAc(2) (N)">Hex(8)HexNAc(2) (N)</option>
        <option value="Hex(8)Phos(3) (S)">Hex(8)Phos(3) (S)</option>
        <option value="Hex(8)Phos(3) (T)">Hex(8)Phos(3) (T)</option>
        <option value="Hex(9)HexNAc(2) (N)">Hex(9)HexNAc(2) (N)</option>
        <option value="Hex(9)Phos(3) (S)">Hex(9)Phos(3) (S)</option>
        <option value="Hex(9)Phos(3) (T)">Hex(9)Phos(3) (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (S)">HexN (S)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(1) (S)">HexNAc(1)dHex(1) (S)</option>
        <option value="HexNAc(1)dHex(1) (T)">HexNAc(1)dHex(1) (T)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(1)Kdn(2) (S)">HexNAc(1)Kdn(2) (S)</option>
        <option value="HexNAc(1)Kdn(2) (T)">HexNAc(1)Kdn(2) (T)</option>
        <option value="HexNAc(1)NeuAc(1) (S)">HexNAc(1)NeuAc(1) (S)</option>
        <option value="HexNAc(1)NeuAc(1) (T)">HexNAc(1)NeuAc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(1) (S)">HexNAc(1)NeuGc(1) (S)</option>
        <option value="HexNAc(1)NeuGc(1) (T)">HexNAc(1)NeuGc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(2) (S)">HexNAc(1)NeuGc(2) (S)</option>
        <option value="HexNAc(1)NeuGc(2) (T)">HexNAc(1)NeuGc(2) (T)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2) (S)">HexNAc(2) (S)</option>
        <option value="HexNAc(2) (T)">HexNAc(2) (T)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="HexNAc(2)NeuAc(1) (S)">HexNAc(2)NeuAc(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1) (T)">HexNAc(2)NeuAc(1) (T)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (S)">HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (T)">HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="HexNAc(2)NeuGc(1) (S)">HexNAc(2)NeuGc(1) (S)</option>
        <option value="HexNAc(2)NeuGc(1) (T)">HexNAc(2)NeuGc(1) (T)</option>
        <option value="HexNAc(3) (S)">HexNAc(3) (S)</option>
        <option value="HexNAc(3) (T)">HexNAc(3) (T)</option>
        <option value="HexNAc(3)Sulf(1) (S)">HexNAc(3)Sulf(1) (S)</option>
        <option value="HexNAc(3)Sulf(1) (T)">HexNAc(3)Sulf(1) (T)</option>
        <option value="HexNAc(4) (S)">HexNAc(4) (S)</option>
        <option value="HexNAc(4) (T)">HexNAc(4) (T)</option>
        <option value="HexNAc(5) (S)">HexNAc(5) (S)</option>
        <option value="HexNAc(5) (T)">HexNAc(5) (T)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IASD (C)">IASD (C)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL (Protein N-term)">ICPL (Protein N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6) (Protein N-term)">ICPL:13C(6) (Protein N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (Protein N-term)">ICPL:13C(6)2H(4) (Protein N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (Protein N-term)">ICPL:2H(4) (Protein N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (Protein N-term)">iTRAQ4plex (Protein N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (Protein N-term)">iTRAQ8plex (Protein N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(2)15N(2) (K)">Label:13C(2)15N(2) (K)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-K (Protein N-term)">LG-Hlactam-K (Protein N-term)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-K (Protein N-term)">LG-lactam-K (Protein N-term)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="LRGG+dimethyl (K)">LRGG+dimethyl (K)</option>
        <option value="LRGG+methyl (K)">LRGG+methyl (K)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lys-loss (Protein C-term K)">Lys-loss (Protein C-term K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Met-loss (Protein N-term M)">Met-loss (Protein N-term M)</option>
        <option value="Met-loss+Acetyl (Protein N-term M)">Met-loss+Acetyl (Protein N-term M)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Protein N-term)">Methyl (Protein N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(2) (N-term)">Methyl:2H(2) (N-term)</option>
        <option value="Methyl:2H(2)13C (C)">Methyl:2H(2)13C (C)</option>
        <option value="Methyl:2H(2)13C (C-term)">Methyl:2H(2)13C (C-term)</option>
        <option value="Methyl:2H(2)13C (D)">Methyl:2H(2)13C (D)</option>
        <option value="Methyl:2H(2)13C (E)">Methyl:2H(2)13C (E)</option>
        <option value="Methyl:2H(2)13C (H)">Methyl:2H(2)13C (H)</option>
        <option value="Methyl:2H(2)13C (I)">Methyl:2H(2)13C (I)</option>
        <option value="Methyl:2H(2)13C (K)">Methyl:2H(2)13C (K)</option>
        <option value="Methyl:2H(2)13C (L)">Methyl:2H(2)13C (L)</option>
        <option value="Methyl:2H(2)13C (N)">Methyl:2H(2)13C (N)</option>
        <option value="Methyl:2H(2)13C (N-term)">Methyl:2H(2)13C (N-term)</option>
        <option value="Methyl:2H(2)13C (Protein N-term)">Methyl:2H(2)13C (Protein N-term)</option>
        <option value="Methyl:2H(2)13C (Q)">Methyl:2H(2)13C (Q)</option>
        <option value="Methyl:2H(2)13C (R)">Methyl:2H(2)13C (R)</option>
        <option value="Methyl:2H(2)13C (S)">Methyl:2H(2)13C (S)</option>
        <option value="Methyl:2H(2)13C (T)">Methyl:2H(2)13C (T)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3) (X)">Methyl:2H(3) (X)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (N-term)">Methyl:2H(3)13C(1) (N-term)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="Microcin (Protein C-term)">Microcin (Protein C-term)</option>
        <option value="MicrocinC7 (Protein C-term)">MicrocinC7 (Protein C-term)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD (U)">MolybdopterinGD (U)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoleyl (Protein N-term G)">Myristoleyl (Protein N-term G)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="Myristoyl+Delta:H(-4) (Protein N-term G)">Myristoyl+Delta:H(-4) (Protein N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NO_SMX_SMCT (C)">NO_SMX_SMCT (C)</option>
        <option value="NP40 (N-term)">NP40 (N-term)</option>
        <option value="NQIGG (K)">NQIGG (K)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (U)">Oxidation (U)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (Protein N-term)">Palmitoyl (Protein N-term)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="Pentose (S)">Pentose (S)</option>
        <option value="Pentose (T)">Pentose (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHex (T)">PhosphoHex (T)</option>
        <option value="PhosphoHex(2) (N)">PhosphoHex(2) (N)</option>
        <option value="PhosphoHex(2) (S)">PhosphoHex(2) (S)</option>
        <option value="PhosphoHex(2) (T)">PhosphoHex(2) (T)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (Protein N-term)">Propionyl (Protein N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (C-term)">Propyl (C-term)</option>
        <option value="Propyl (D)">Propyl (D)</option>
        <option value="Propyl (E)">Propyl (E)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl (Protein C-term)">Propyl (Protein C-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="PyruvicAcidIminyl (Protein N-term C)">PyruvicAcidIminyl (Protein N-term C)</option>
        <option value="PyruvicAcidIminyl (Protein N-term V)">PyruvicAcidIminyl (Protein N-term V)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="RNPXL (N-term K)">RNPXL (N-term K)</option>
        <option value="RNPXL (N-term R)">RNPXL (N-term R)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="RNPXlink2 (F)">RNPXlink2 (F)</option>
        <option value="RNPXlink2 (K)">RNPXlink2 (K)</option>
        <option value="RNPXlink2 (L)">RNPXlink2 (L)</option>
        <option value="RNPXlink3 (C)">RNPXlink3 (C)</option>
        <option value="RNPXlink3 (F)">RNPXlink3 (F)</option>
        <option value="RNPXlink4 (C)">RNPXlink4 (C)</option>
        <option value="RNPXlink5 (F)">RNPXlink5 (F)</option>
        <option value="RNPXlink5 (Y)">RNPXlink5 (Y)</option>
        <option value="s-GlcNAc (S)">s-GlcNAc (S)</option>
        <option value="s-GlcNAc (T)">s-GlcNAc (T)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;LacticAcid (Protein N-term S)">Ser-&gt;LacticAcid (Protein N-term S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="SMCC-maleimide (C)">SMCC-maleimide (C)</option>
        <option value="spermidine (Q)">spermidine (Q)</option>
        <option value="spermine (Q)">spermine (Q)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl (Protein N-term)">Succinyl (Protein N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (N-term C)">Thiazolidine (N-term C)</option>
        <option value="Thioacyl (K)">Thioacyl (K)</option>
        <option value="Thioacyl (X)">Thioacyl (X)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (Protein N-term)">TMT (Protein N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (Protein N-term)">TMT2plex (Protein N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (Protein N-term)">TMT6plex (Protein N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (Protein N-term A)">Trimethyl (Protein N-term A)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Tripalmitate (Protein N-term C)">Tripalmitate (Protein N-term C)</option>
        <option value="Tris (N)">Tris (N)</option>
        <option value="Triton (C-term)">Triton (C-term)</option>
        <option value="Triton (N-term)">Triton (N-term)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tween20 (N-term)">Tween20 (N-term)</option>
        <option value="Tween80 (C-term)">Tween80 (C-term)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-amide (C)">Ub-amide (C)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:DMP (K)">Xlink:DMP (K)</option>
        <option value="Xlink:DMP (Protein N-term)">Xlink:DMP (Protein N-term)</option>
        <option value="Xlink:DMP-de (K)">Xlink:DMP-de (K)</option>
        <option value="Xlink:DMP-de (Protein N-term)">Xlink:DMP-de (Protein N-term)</option>
        <option value="Xlink:DMP-s (K)">Xlink:DMP-s (K)</option>
        <option value="Xlink:DMP-s (Protein N-term)">Xlink:DMP-s (Protein N-term)</option>
        <option value="Xlink:DSS (K)">Xlink:DSS (K)</option>
        <option value="Xlink:DSS (Protein N-term)">Xlink:DSS (Protein N-term)</option>
        <option value="Xlink:DSS-NH2 (K)">Xlink:DSS-NH2 (K)</option>
        <option value="Xlink:DSS-NH2 (Protein N-term)">Xlink:DSS-NH2 (Protein N-term)</option>
        <option value="Xlink:DST (K)">Xlink:DST (K)</option>
        <option value="Xlink:DST (Protein N-term)">Xlink:DST (Protein N-term)</option>
        <option value="Xlink:DTSSP (K)">Xlink:DTSSP (K)</option>
        <option value="Xlink:DTSSP (Protein N-term)">Xlink:DTSSP (Protein N-term)</option>
        <option value="Xlink:EGS (K)">Xlink:EGS (K)</option>
        <option value="Xlink:EGS (Protein N-term)">Xlink:EGS (Protein N-term)</option>
        <option value="Xlink:EGScleaved (K)">Xlink:EGScleaved (K)</option>
        <option value="Xlink:EGScleaved (Protein N-term)">Xlink:EGScleaved (Protein N-term)</option>
        <option value="Xlink:SMCC (C)">Xlink:SMCC (C)</option>
        <option value="Xlink:SSD (K)">Xlink:SSD (K)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <expand macro="list_string_san"/>
      </param>
      <param name="variable" argument="-modifications:variable" multiple="true" type="select" optional="true" label="Variable modifications, specified using UniMod (www.unimod.org) terms" help="e.g. 'Oxidation (M)'">
        <option value="">default (nothing chosen)</option>
        <option value="15N-oxobutanoic (N-term C)">15N-oxobutanoic (N-term C)</option>
        <option value="15N-oxobutanoic (Protein N-term S)">15N-oxobutanoic (Protein N-term S)</option>
        <option value="15N-oxobutanoic (Protein N-term T)">15N-oxobutanoic (Protein N-term T)</option>
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (Protein N-term)">Acetyl (Protein N-term)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:13C(2) (Protein N-term)">Acetyl:13C(2) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (Protein N-term)">Acetyl:2H(3) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="ADP-Ribosyl (T)">ADP-Ribosyl (T)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (Protein N-term)">AEBS (Protein N-term)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidated (Protein C-term)">Amidated (Protein C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonia-loss (Protein N-term S)">Ammonia-loss (Protein N-term S)</option>
        <option value="Ammonia-loss (Protein N-term T)">Ammonia-loss (Protein N-term T)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (Protein N-term)">BDMAPP (Protein N-term)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="beta FNA (C)">beta FNA (C)</option>
        <option value="beta FNA (K)">beta FNA (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-PEO-Amine (Protein C-term)">Biotin-PEO-Amine (Protein C-term)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin-tyramide (Y)">Biotin-tyramide (Y)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21330 (K)">Biotin:Thermo-21330 (K)</option>
        <option value="Biotin:Thermo-21330 (N-term)">Biotin:Thermo-21330 (N-term)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (X)">Biotin:Thermo-21360 (X)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (X)">Biotin:Thermo-33033 (X)</option>
        <option value="Biotin:Thermo-33033-H (X)">Biotin:Thermo-33033-H (X)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="biotinAcrolein298 (Protein N-term)">biotinAcrolein298 (Protein N-term)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMOE (C)">BMOE (C)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Bodipy (C)">Bodipy (C)</option>
        <option value="Brij35 (N-term)">Brij35 (N-term)</option>
        <option value="Brij58 (N-term)">Brij58 (N-term)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CAMthiopropanoyl (Protein N-term)">CAMthiopropanoyl (Protein N-term)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (U)">Carbamidomethyl (U)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (Protein N-term)">Carbamyl (Protein N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (Protein N-term M)">Carboxy (Protein N-term M)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxy-&gt;Thiocarboxy (Protein C-term G)">Carboxy-&gt;Thiocarboxy (Protein C-term G)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxyethylpyrrole (K)">Carboxyethylpyrrole (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (U)">Carboxymethyl (U)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Cu[I] (H)">Cation:Cu[I] (H)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Cation:Zn[II] (H)">Cation:Zn[II] (H)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Chlorpyrifos (S)">Chlorpyrifos (S)</option>
        <option value="Chlorpyrifos (T)">Chlorpyrifos (T)</option>
        <option value="Chlorpyrifos (Y)">Chlorpyrifos (Y)</option>
        <option value="Cholesterol (Protein C-term)">Cholesterol (Protein C-term)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="CUSTOM0 (A)">CUSTOM0 (A)</option>
        <option value="CUSTOM0 (C)">CUSTOM0 (C)</option>
        <option value="CUSTOM0 (C-term)">CUSTOM0 (C-term)</option>
        <option value="CUSTOM0 (D)">CUSTOM0 (D)</option>
        <option value="CUSTOM0 (E)">CUSTOM0 (E)</option>
        <option value="CUSTOM0 (F)">CUSTOM0 (F)</option>
        <option value="CUSTOM0 (G)">CUSTOM0 (G)</option>
        <option value="CUSTOM0 (H)">CUSTOM0 (H)</option>
        <option value="CUSTOM0 (I)">CUSTOM0 (I)</option>
        <option value="CUSTOM0 (K)">CUSTOM0 (K)</option>
        <option value="CUSTOM0 (L)">CUSTOM0 (L)</option>
        <option value="CUSTOM0 (M)">CUSTOM0 (M)</option>
        <option value="CUSTOM0 (N)">CUSTOM0 (N)</option>
        <option value="CUSTOM0 (N-term)">CUSTOM0 (N-term)</option>
        <option value="CUSTOM0 (P)">CUSTOM0 (P)</option>
        <option value="CUSTOM0 (Q)">CUSTOM0 (Q)</option>
        <option value="CUSTOM0 (R)">CUSTOM0 (R)</option>
        <option value="CUSTOM0 (S)">CUSTOM0 (S)</option>
        <option value="CUSTOM0 (T)">CUSTOM0 (T)</option>
        <option value="CUSTOM0 (V)">CUSTOM0 (V)</option>
        <option value="CUSTOM0 (W)">CUSTOM0 (W)</option>
        <option value="CUSTOM0 (Y)">CUSTOM0 (Y)</option>
        <option value="CUSTOM1 (A)">CUSTOM1 (A)</option>
        <option value="CUSTOM1 (C)">CUSTOM1 (C)</option>
        <option value="CUSTOM1 (C-term)">CUSTOM1 (C-term)</option>
        <option value="CUSTOM1 (D)">CUSTOM1 (D)</option>
        <option value="CUSTOM1 (E)">CUSTOM1 (E)</option>
        <option value="CUSTOM1 (F)">CUSTOM1 (F)</option>
        <option value="CUSTOM1 (G)">CUSTOM1 (G)</option>
        <option value="CUSTOM1 (H)">CUSTOM1 (H)</option>
        <option value="CUSTOM1 (I)">CUSTOM1 (I)</option>
        <option value="CUSTOM1 (K)">CUSTOM1 (K)</option>
        <option value="CUSTOM1 (L)">CUSTOM1 (L)</option>
        <option value="CUSTOM1 (M)">CUSTOM1 (M)</option>
        <option value="CUSTOM1 (N)">CUSTOM1 (N)</option>
        <option value="CUSTOM1 (N-term)">CUSTOM1 (N-term)</option>
        <option value="CUSTOM1 (P)">CUSTOM1 (P)</option>
        <option value="CUSTOM1 (Q)">CUSTOM1 (Q)</option>
        <option value="CUSTOM1 (R)">CUSTOM1 (R)</option>
        <option value="CUSTOM1 (S)">CUSTOM1 (S)</option>
        <option value="CUSTOM1 (T)">CUSTOM1 (T)</option>
        <option value="CUSTOM1 (V)">CUSTOM1 (V)</option>
        <option value="CUSTOM1 (W)">CUSTOM1 (W)</option>
        <option value="CUSTOM1 (Y)">CUSTOM1 (Y)</option>
        <option value="CUSTOM2 (A)">CUSTOM2 (A)</option>
        <option value="CUSTOM2 (C)">CUSTOM2 (C)</option>
        <option value="CUSTOM2 (C-term)">CUSTOM2 (C-term)</option>
        <option value="CUSTOM2 (D)">CUSTOM2 (D)</option>
        <option value="CUSTOM2 (E)">CUSTOM2 (E)</option>
        <option value="CUSTOM2 (F)">CUSTOM2 (F)</option>
        <option value="CUSTOM2 (G)">CUSTOM2 (G)</option>
        <option value="CUSTOM2 (H)">CUSTOM2 (H)</option>
        <option value="CUSTOM2 (I)">CUSTOM2 (I)</option>
        <option value="CUSTOM2 (K)">CUSTOM2 (K)</option>
        <option value="CUSTOM2 (L)">CUSTOM2 (L)</option>
        <option value="CUSTOM2 (M)">CUSTOM2 (M)</option>
        <option value="CUSTOM2 (N)">CUSTOM2 (N)</option>
        <option value="CUSTOM2 (N-term)">CUSTOM2 (N-term)</option>
        <option value="CUSTOM2 (P)">CUSTOM2 (P)</option>
        <option value="CUSTOM2 (Q)">CUSTOM2 (Q)</option>
        <option value="CUSTOM2 (R)">CUSTOM2 (R)</option>
        <option value="CUSTOM2 (S)">CUSTOM2 (S)</option>
        <option value="CUSTOM2 (T)">CUSTOM2 (T)</option>
        <option value="CUSTOM2 (V)">CUSTOM2 (V)</option>
        <option value="CUSTOM2 (W)">CUSTOM2 (W)</option>
        <option value="CUSTOM2 (Y)">CUSTOM2 (Y)</option>
        <option value="CUSTOM3 (A)">CUSTOM3 (A)</option>
        <option value="CUSTOM3 (C)">CUSTOM3 (C)</option>
        <option value="CUSTOM3 (C-term)">CUSTOM3 (C-term)</option>
        <option value="CUSTOM3 (D)">CUSTOM3 (D)</option>
        <option value="CUSTOM3 (E)">CUSTOM3 (E)</option>
        <option value="CUSTOM3 (F)">CUSTOM3 (F)</option>
        <option value="CUSTOM3 (G)">CUSTOM3 (G)</option>
        <option value="CUSTOM3 (H)">CUSTOM3 (H)</option>
        <option value="CUSTOM3 (I)">CUSTOM3 (I)</option>
        <option value="CUSTOM3 (K)">CUSTOM3 (K)</option>
        <option value="CUSTOM3 (L)">CUSTOM3 (L)</option>
        <option value="CUSTOM3 (M)">CUSTOM3 (M)</option>
        <option value="CUSTOM3 (N)">CUSTOM3 (N)</option>
        <option value="CUSTOM3 (N-term)">CUSTOM3 (N-term)</option>
        <option value="CUSTOM3 (P)">CUSTOM3 (P)</option>
        <option value="CUSTOM3 (Q)">CUSTOM3 (Q)</option>
        <option value="CUSTOM3 (R)">CUSTOM3 (R)</option>
        <option value="CUSTOM3 (S)">CUSTOM3 (S)</option>
        <option value="CUSTOM3 (T)">CUSTOM3 (T)</option>
        <option value="CUSTOM3 (V)">CUSTOM3 (V)</option>
        <option value="CUSTOM3 (W)">CUSTOM3 (W)</option>
        <option value="CUSTOM3 (Y)">CUSTOM3 (Y)</option>
        <option value="CUSTOM4 (A)">CUSTOM4 (A)</option>
        <option value="CUSTOM4 (C)">CUSTOM4 (C)</option>
        <option value="CUSTOM4 (C-term)">CUSTOM4 (C-term)</option>
        <option value="CUSTOM4 (D)">CUSTOM4 (D)</option>
        <option value="CUSTOM4 (E)">CUSTOM4 (E)</option>
        <option value="CUSTOM4 (F)">CUSTOM4 (F)</option>
        <option value="CUSTOM4 (G)">CUSTOM4 (G)</option>
        <option value="CUSTOM4 (H)">CUSTOM4 (H)</option>
        <option value="CUSTOM4 (I)">CUSTOM4 (I)</option>
        <option value="CUSTOM4 (K)">CUSTOM4 (K)</option>
        <option value="CUSTOM4 (L)">CUSTOM4 (L)</option>
        <option value="CUSTOM4 (M)">CUSTOM4 (M)</option>
        <option value="CUSTOM4 (N)">CUSTOM4 (N)</option>
        <option value="CUSTOM4 (N-term)">CUSTOM4 (N-term)</option>
        <option value="CUSTOM4 (P)">CUSTOM4 (P)</option>
        <option value="CUSTOM4 (Q)">CUSTOM4 (Q)</option>
        <option value="CUSTOM4 (R)">CUSTOM4 (R)</option>
        <option value="CUSTOM4 (S)">CUSTOM4 (S)</option>
        <option value="CUSTOM4 (T)">CUSTOM4 (T)</option>
        <option value="CUSTOM4 (V)">CUSTOM4 (V)</option>
        <option value="CUSTOM4 (W)">CUSTOM4 (W)</option>
        <option value="CUSTOM4 (Y)">CUSTOM4 (Y)</option>
        <option value="CUSTOM5 (A)">CUSTOM5 (A)</option>
        <option value="CUSTOM5 (C)">CUSTOM5 (C)</option>
        <option value="CUSTOM5 (C-term)">CUSTOM5 (C-term)</option>
        <option value="CUSTOM5 (D)">CUSTOM5 (D)</option>
        <option value="CUSTOM5 (E)">CUSTOM5 (E)</option>
        <option value="CUSTOM5 (F)">CUSTOM5 (F)</option>
        <option value="CUSTOM5 (G)">CUSTOM5 (G)</option>
        <option value="CUSTOM5 (H)">CUSTOM5 (H)</option>
        <option value="CUSTOM5 (I)">CUSTOM5 (I)</option>
        <option value="CUSTOM5 (K)">CUSTOM5 (K)</option>
        <option value="CUSTOM5 (L)">CUSTOM5 (L)</option>
        <option value="CUSTOM5 (M)">CUSTOM5 (M)</option>
        <option value="CUSTOM5 (N)">CUSTOM5 (N)</option>
        <option value="CUSTOM5 (N-term)">CUSTOM5 (N-term)</option>
        <option value="CUSTOM5 (P)">CUSTOM5 (P)</option>
        <option value="CUSTOM5 (Q)">CUSTOM5 (Q)</option>
        <option value="CUSTOM5 (R)">CUSTOM5 (R)</option>
        <option value="CUSTOM5 (S)">CUSTOM5 (S)</option>
        <option value="CUSTOM5 (T)">CUSTOM5 (T)</option>
        <option value="CUSTOM5 (V)">CUSTOM5 (V)</option>
        <option value="CUSTOM5 (W)">CUSTOM5 (W)</option>
        <option value="CUSTOM5 (Y)">CUSTOM5 (Y)</option>
        <option value="CUSTOM6 (A)">CUSTOM6 (A)</option>
        <option value="CUSTOM6 (C)">CUSTOM6 (C)</option>
        <option value="CUSTOM6 (C-term)">CUSTOM6 (C-term)</option>
        <option value="CUSTOM6 (D)">CUSTOM6 (D)</option>
        <option value="CUSTOM6 (E)">CUSTOM6 (E)</option>
        <option value="CUSTOM6 (F)">CUSTOM6 (F)</option>
        <option value="CUSTOM6 (G)">CUSTOM6 (G)</option>
        <option value="CUSTOM6 (H)">CUSTOM6 (H)</option>
        <option value="CUSTOM6 (I)">CUSTOM6 (I)</option>
        <option value="CUSTOM6 (K)">CUSTOM6 (K)</option>
        <option value="CUSTOM6 (L)">CUSTOM6 (L)</option>
        <option value="CUSTOM6 (M)">CUSTOM6 (M)</option>
        <option value="CUSTOM6 (N)">CUSTOM6 (N)</option>
        <option value="CUSTOM6 (N-term)">CUSTOM6 (N-term)</option>
        <option value="CUSTOM6 (P)">CUSTOM6 (P)</option>
        <option value="CUSTOM6 (Q)">CUSTOM6 (Q)</option>
        <option value="CUSTOM6 (R)">CUSTOM6 (R)</option>
        <option value="CUSTOM6 (S)">CUSTOM6 (S)</option>
        <option value="CUSTOM6 (T)">CUSTOM6 (T)</option>
        <option value="CUSTOM6 (V)">CUSTOM6 (V)</option>
        <option value="CUSTOM6 (W)">CUSTOM6 (W)</option>
        <option value="CUSTOM6 (Y)">CUSTOM6 (Y)</option>
        <option value="CUSTOM7 (A)">CUSTOM7 (A)</option>
        <option value="CUSTOM7 (C)">CUSTOM7 (C)</option>
        <option value="CUSTOM7 (C-term)">CUSTOM7 (C-term)</option>
        <option value="CUSTOM7 (D)">CUSTOM7 (D)</option>
        <option value="CUSTOM7 (E)">CUSTOM7 (E)</option>
        <option value="CUSTOM7 (F)">CUSTOM7 (F)</option>
        <option value="CUSTOM7 (G)">CUSTOM7 (G)</option>
        <option value="CUSTOM7 (H)">CUSTOM7 (H)</option>
        <option value="CUSTOM7 (I)">CUSTOM7 (I)</option>
        <option value="CUSTOM7 (K)">CUSTOM7 (K)</option>
        <option value="CUSTOM7 (L)">CUSTOM7 (L)</option>
        <option value="CUSTOM7 (M)">CUSTOM7 (M)</option>
        <option value="CUSTOM7 (N)">CUSTOM7 (N)</option>
        <option value="CUSTOM7 (N-term)">CUSTOM7 (N-term)</option>
        <option value="CUSTOM7 (P)">CUSTOM7 (P)</option>
        <option value="CUSTOM7 (Q)">CUSTOM7 (Q)</option>
        <option value="CUSTOM7 (R)">CUSTOM7 (R)</option>
        <option value="CUSTOM7 (S)">CUSTOM7 (S)</option>
        <option value="CUSTOM7 (T)">CUSTOM7 (T)</option>
        <option value="CUSTOM7 (V)">CUSTOM7 (V)</option>
        <option value="CUSTOM7 (W)">CUSTOM7 (W)</option>
        <option value="CUSTOM7 (Y)">CUSTOM7 (Y)</option>
        <option value="CUSTOM8 (A)">CUSTOM8 (A)</option>
        <option value="CUSTOM8 (C)">CUSTOM8 (C)</option>
        <option value="CUSTOM8 (C-term)">CUSTOM8 (C-term)</option>
        <option value="CUSTOM8 (D)">CUSTOM8 (D)</option>
        <option value="CUSTOM8 (E)">CUSTOM8 (E)</option>
        <option value="CUSTOM8 (F)">CUSTOM8 (F)</option>
        <option value="CUSTOM8 (G)">CUSTOM8 (G)</option>
        <option value="CUSTOM8 (H)">CUSTOM8 (H)</option>
        <option value="CUSTOM8 (I)">CUSTOM8 (I)</option>
        <option value="CUSTOM8 (K)">CUSTOM8 (K)</option>
        <option value="CUSTOM8 (L)">CUSTOM8 (L)</option>
        <option value="CUSTOM8 (M)">CUSTOM8 (M)</option>
        <option value="CUSTOM8 (N)">CUSTOM8 (N)</option>
        <option value="CUSTOM8 (N-term)">CUSTOM8 (N-term)</option>
        <option value="CUSTOM8 (P)">CUSTOM8 (P)</option>
        <option value="CUSTOM8 (Q)">CUSTOM8 (Q)</option>
        <option value="CUSTOM8 (R)">CUSTOM8 (R)</option>
        <option value="CUSTOM8 (S)">CUSTOM8 (S)</option>
        <option value="CUSTOM8 (T)">CUSTOM8 (T)</option>
        <option value="CUSTOM8 (V)">CUSTOM8 (V)</option>
        <option value="CUSTOM8 (W)">CUSTOM8 (W)</option>
        <option value="CUSTOM8 (Y)">CUSTOM8 (Y)</option>
        <option value="CUSTOM9 (A)">CUSTOM9 (A)</option>
        <option value="CUSTOM9 (C)">CUSTOM9 (C)</option>
        <option value="CUSTOM9 (C-term)">CUSTOM9 (C-term)</option>
        <option value="CUSTOM9 (D)">CUSTOM9 (D)</option>
        <option value="CUSTOM9 (E)">CUSTOM9 (E)</option>
        <option value="CUSTOM9 (F)">CUSTOM9 (F)</option>
        <option value="CUSTOM9 (G)">CUSTOM9 (G)</option>
        <option value="CUSTOM9 (H)">CUSTOM9 (H)</option>
        <option value="CUSTOM9 (I)">CUSTOM9 (I)</option>
        <option value="CUSTOM9 (K)">CUSTOM9 (K)</option>
        <option value="CUSTOM9 (L)">CUSTOM9 (L)</option>
        <option value="CUSTOM9 (M)">CUSTOM9 (M)</option>
        <option value="CUSTOM9 (N)">CUSTOM9 (N)</option>
        <option value="CUSTOM9 (N-term)">CUSTOM9 (N-term)</option>
        <option value="CUSTOM9 (P)">CUSTOM9 (P)</option>
        <option value="CUSTOM9 (Q)">CUSTOM9 (Q)</option>
        <option value="CUSTOM9 (R)">CUSTOM9 (R)</option>
        <option value="CUSTOM9 (S)">CUSTOM9 (S)</option>
        <option value="CUSTOM9 (T)">CUSTOM9 (T)</option>
        <option value="CUSTOM9 (V)">CUSTOM9 (V)</option>
        <option value="CUSTOM9 (W)">CUSTOM9 (W)</option>
        <option value="CUSTOM9 (Y)">CUSTOM9 (Y)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;CamSec (C)">Cys-&gt;CamSec (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;PyruvicAcid (Protein N-term C)">Cys-&gt;PyruvicAcid (Protein N-term C)</option>
        <option value="Cys-&gt;SecNEM (C)">Cys-&gt;SecNEM (C)</option>
        <option value="Cys-&gt;SecNEM:2H(5) (C)">Cys-&gt;SecNEM:2H(5) (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Protein N-term F)">Deamidated (Protein N-term F)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (Protein C-term N)">Dehydrated (Protein C-term N)</option>
        <option value="Dehydrated (Protein C-term Q)">Dehydrated (Protein C-term Q)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(1)N(-1)18O(1) (N)">Delta:H(1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(2) (Protein N-term)">Delta:H(2)C(2) (Protein N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3) (Protein N-term)">Delta:H(4)C(3) (Protein N-term)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(3)O(1) (Protein N-term)">Delta:H(6)C(3)O(1) (Protein N-term)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (K)">Delta:H(8)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (Protein N-term)">Delta:H(8)C(6)O(1) (Protein N-term)</option>
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        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
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        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
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        <option value="DeStreak (C)">DeStreak (C)</option>
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        <option value="DFDNB (K)">DFDNB (K)</option>
        <option value="DFDNB (N)">DFDNB (N)</option>
        <option value="DFDNB (Q)">DFDNB (Q)</option>
        <option value="DFDNB (R)">DFDNB (R)</option>
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        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuGc(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(3) (T)">dHex(1)Hex(1)HexNAc(3) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(1)HexNAc(4) (T)">dHex(1)Hex(1)HexNAc(4) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
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        <option value="dHex(1)Hex(2)HexA(1) (T)">dHex(1)Hex(2)HexA(1) (T)</option>
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        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (T)">dHex(1)Hex(2)HexA(1)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (S)">dHex(1)Hex(2)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (T)">dHex(1)Hex(2)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Pent(1) (N)">dHex(1)Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(3) (N)">dHex(1)Hex(2)HexNAc(3) (N)</option>
        <option value="dHex(1)Hex(2)HexNAc(3) (S)">dHex(1)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(3) (T)">dHex(1)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)NeuAc(1) (S)">dHex(1)Hex(2)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)NeuAc(1) (T)">dHex(1)Hex(2)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(4) (S)">dHex(1)Hex(2)HexNAc(4) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(4) (T)">dHex(1)Hex(2)HexNAc(4) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(4)NeuAc(1) (S)">dHex(1)Hex(2)HexNAc(4)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(4)NeuAc(1) (T)">dHex(1)Hex(2)HexNAc(4)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(4)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(4)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(4)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(4)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(3) (S)">dHex(1)Hex(3) (S)</option>
        <option value="dHex(1)Hex(3) (T)">dHex(1)Hex(3) (T)</option>
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        <option value="dHex(1)Hex(3)HexA(1)HexNAc(1) (T)">dHex(1)Hex(3)HexA(1)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(3)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(3)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(2) (S)">dHex(1)Hex(3)HexA(1)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(2) (T)">dHex(1)Hex(3)HexA(1)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(3)HexA(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(3)HexA(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(3)Sulf(1) (S)">dHex(1)Hex(3)HexA(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(3)HexA(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(3)HexA(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(3)HexA(2)HexNAc(2) (S)">dHex(1)Hex(3)HexA(2)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(3)HexA(2)HexNAc(2) (T)">dHex(1)Hex(3)HexA(2)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(1) (S)">dHex(1)Hex(3)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(1) (T)">dHex(1)Hex(3)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(3)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(3)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(2) (N)">dHex(1)Hex(3)HexNAc(2) (N)</option>
        <option value="dHex(1)Hex(3)HexNAc(2) (S)">dHex(1)Hex(3)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(2) (T)">dHex(1)Hex(3)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(2)NeuGc(1) (S)">dHex(1)Hex(3)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(3)HexNAc(2)NeuGc(1) (T)</option>
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        <option value="dHex(1)Hex(3)HexNAc(2)Sulf(1) (N)">dHex(1)Hex(3)HexNAc(2)Sulf(1) (N)</option>
        <option value="dHex(1)Hex(3)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(3)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(3)HexNAc(2)Sulf(1) (T)</option>
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        <option value="dHex(1)Hex(3)HexNAc(3) (S)">dHex(1)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(3) (T)">dHex(1)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(3)NeuAc(2) (S)">dHex(1)Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(3)HexNAc(3)NeuAc(2) (T)">dHex(1)Hex(3)HexNAc(3)NeuAc(2) (T)</option>
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        <option value="dHex(1)Hex(3)HexNAc(3)Pent(2) (N)">dHex(1)Hex(3)HexNAc(3)Pent(2) (N)</option>
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        <option value="dHex(1)Hex(3)HexNAc(4) (S)">dHex(1)Hex(3)HexNAc(4) (S)</option>
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        <option value="dHex(1)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)</option>
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        <option value="dHex(2)Hex(3)HexNAc(2) (T)">dHex(2)Hex(3)HexNAc(2) (T)</option>
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        <option value="dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)">dHex(2)Hex(4)HexA(1)HexNAc(3)Sulf(1) (T)</option>
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        <option value="dHex(2)Hex(4)HexNAc(4) (N)">dHex(2)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(4) (S)">dHex(2)Hex(4)HexNAc(4) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(4) (T)">dHex(2)Hex(4)HexNAc(4) (T)</option>
        <option value="dHex(2)Hex(4)HexNAc(4)Pent(1) (N)">dHex(2)Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(4)Sulf(1) (N)">dHex(2)Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (N)">dHex(2)Hex(4)HexNAc(5) (N)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (S)">dHex(2)Hex(4)HexNAc(5) (S)</option>
        <option value="dHex(2)Hex(4)HexNAc(5) (T)">dHex(2)Hex(4)HexNAc(5) (T)</option>
        <option value="dHex(2)Hex(5)HexNAc(3)Pent(1) (N)">dHex(2)Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(2)Hex(5)HexNAc(4) (N)">dHex(2)Hex(5)HexNAc(4) (N)</option>
        <option value="dHex(2)HexNAc(2)Kdn(1) (S)">dHex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(2)HexNAc(2)Kdn(1) (T)">dHex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(2)HexNAc(5) (S)">dHex(2)HexNAc(5) (S)</option>
        <option value="dHex(2)HexNAc(5) (T)">dHex(2)HexNAc(5) (T)</option>
        <option value="dHex(2)HexNAc(7) (S)">dHex(2)HexNAc(7) (S)</option>
        <option value="dHex(2)HexNAc(7) (T)">dHex(2)HexNAc(7) (T)</option>
        <option value="dHex(3)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(3)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(3)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(1)HexNAc(3)Kdn(1) (S)">dHex(3)Hex(1)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(1)HexNAc(3)Kdn(1) (T)">dHex(3)Hex(1)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (S)">dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (T)">dHex(3)Hex(2)HexA(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(2) (S)">dHex(3)Hex(2)HexNAc(2) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(2) (T)">dHex(3)Hex(2)HexNAc(2) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(3)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(3)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(3) (S)">dHex(3)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(3) (T)">dHex(3)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(3)Kdn(1) (S)">dHex(3)Hex(2)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(3)Kdn(1) (T)">dHex(3)Hex(2)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(3)Hex(2)HexNAc(4) (S)">dHex(3)Hex(2)HexNAc(4) (S)</option>
        <option value="dHex(3)Hex(2)HexNAc(4) (T)">dHex(3)Hex(2)HexNAc(4) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3) (S)">dHex(3)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(3)Hex(3)HexNAc(3) (T)">dHex(3)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)NeuAc(1) (S)">dHex(3)Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)NeuAc(1) (T)">dHex(3)Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(3)Hex(3)HexNAc(3)Pent(1) (N)">dHex(3)Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="dHex(3)Hex(3)HexNAc(4) (N)">dHex(3)Hex(3)HexNAc(4) (N)</option>
        <option value="dHex(3)Hex(3)HexNAc(4)Pent(1) (N)">dHex(3)Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (N)">dHex(3)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (S)">dHex(3)Hex(4)HexNAc(4) (S)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (T)">dHex(3)Hex(4)HexNAc(4) (T)</option>
        <option value="dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)">dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (S)">dHex(3)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (T)">dHex(3)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (S)">dHex(4)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (T)">dHex(4)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (S)">dHex(4)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (T)">dHex(4)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (S)">dHex(4)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (T)">dHex(4)HexNAc(3)Kdn(1) (T)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Protein N-term)">DiART6plex (Protein N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Protein N-term)">DiART6plex115 (Protein N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Protein N-term)">DiART6plex116/119 (Protein N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Protein N-term)">DiART6plex117 (Protein N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Protein N-term)">DiART6plex118 (Protein N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (Protein N-term P)">Dimethyl (Protein N-term P)</option>
        <option value="Dimethyl (Protein N-term)">Dimethyl (Protein N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(2)13C (K)">Dimethyl:2H(2)13C (K)</option>
        <option value="Dimethyl:2H(2)13C (N)">Dimethyl:2H(2)13C (N)</option>
        <option value="Dimethyl:2H(2)13C (N-term)">Dimethyl:2H(2)13C (N-term)</option>
        <option value="Dimethyl:2H(2)13C (Protein N-term P)">Dimethyl:2H(2)13C (Protein N-term P)</option>
        <option value="Dimethyl:2H(2)13C (R)">Dimethyl:2H(2)13C (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4) (Protein N-term)">Dimethyl:2H(4) (Protein N-term)</option>
        <option value="Dimethyl:2H(4) (R)">Dimethyl:2H(4) (R)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (Protein N-term)">Dimethyl:2H(4)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (R)">Dimethyl:2H(4)13C(2) (R)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (Protein N-term)">Dimethyl:2H(6)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (U)">Dioxidation (U)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTBP (K)">DTBP (K)</option>
        <option value="DTBP (N)">DTBP (N)</option>
        <option value="DTBP (Protein N-term)">DTBP (Protein N-term)</option>
        <option value="DTBP (Q)">DTBP (Q)</option>
        <option value="DTBP (R)">DTBP (R)</option>
        <option value="DTT_C (C)">DTT_C (C)</option>
        <option value="DTT_C:2H(6) (C)">DTT_C:2H(6) (C)</option>
        <option value="DTT_ST (S)">DTT_ST (S)</option>
        <option value="DTT_ST (T)">DTT_ST (T)</option>
        <option value="DTT_ST:2H(6) (S)">DTT_ST:2H(6) (S)</option>
        <option value="DTT_ST:2H(6) (T)">DTT_ST:2H(6) (T)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethoxyformyl (H)">Ethoxyformyl (H)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl (Protein N-term)">Ethyl (Protein N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluorescein-tyramine (Y)">Fluorescein-tyramine (Y)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (Protein N-term)">Formyl (Protein N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="FormylMet (Protein N-term)">FormylMet (Protein N-term)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="Galactosyl (N-term)">Galactosyl (N-term)</option>
        <option value="GEE (Q)">GEE (Q)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu (Protein C-term)">Glu (Protein C-term)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (Protein N-term)">Glucuronyl (Protein N-term)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glucuronyl (T)">Glucuronyl (T)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGlu (Protein C-term)">GluGlu (Protein C-term)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGlu (Protein C-term)">GluGluGlu (Protein C-term)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="GluGluGluGlu (Protein C-term)">GluGluGluGlu (Protein C-term)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="GPIanchor (Protein C-term)">GPIanchor (Protein C-term)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexA(1) (S)">Hex(1)HexA(1) (S)</option>
        <option value="Hex(1)HexA(1) (T)">Hex(1)HexA(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (S)">Hex(1)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (T)">Hex(1)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (S)">Hex(1)HexA(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (T)">Hex(1)HexA(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1) (N)">Hex(1)HexNAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1) (S)">Hex(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1) (T)">Hex(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (S)">Hex(1)HexNAc(1)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (T)">Hex(1)HexNAc(1)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (S)">Hex(1)HexNAc(1)dHex(1)Me(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (T)">Hex(1)HexNAc(1)dHex(1)Me(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (S)">Hex(1)HexNAc(1)dHex(1)Me(2) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (T)">Hex(1)HexNAc(1)dHex(1)Me(2) (T)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (S)">Hex(1)HexNAc(1)NeuAc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (T)">Hex(1)HexNAc(1)NeuAc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (S)">Hex(1)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (T)">Hex(1)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (S)">Hex(1)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (T)">Hex(1)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (S)">Hex(1)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (T)">Hex(1)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (S)">Hex(1)HexNAc(1)NeuGc(5) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (T)">Hex(1)HexNAc(1)NeuGc(5) (T)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (S)">Hex(1)HexNAc(1)Phos(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (T)">Hex(1)HexNAc(1)Phos(1) (T)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2) (S)">Hex(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2) (T)">Hex(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (S)">Hex(1)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (T)">Hex(1)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (S)">Hex(1)HexNAc(2)dHex(2) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (T)">Hex(1)HexNAc(2)dHex(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (S)">Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (T)">Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (S)">Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (T)">Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (S)">Hex(1)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (T)">Hex(1)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(3) (S)">Hex(1)HexNAc(3) (S)</option>
        <option value="Hex(1)HexNAc(3) (T)">Hex(1)HexNAc(3) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (S)">Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (T)">Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (S)">Hex(1)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (T)">Hex(1)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (S)">Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (T)">Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (S)">Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (T)">Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(1)NeuAc(1) (S)">Hex(1)NeuAc(1) (S)</option>
        <option value="Hex(1)NeuAc(1) (T)">Hex(1)NeuAc(1) (T)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (S)">Hex(1)NeuAc(1)Pent(1) (S)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (T)">Hex(1)NeuAc(1)Pent(1) (T)</option>
        <option value="Hex(1)NeuGc(1) (S)">Hex(1)NeuGc(1) (S)</option>
        <option value="Hex(1)NeuGc(1) (T)">Hex(1)NeuGc(1) (T)</option>
        <option value="Hex(1)Pent(1) (S)">Hex(1)Pent(1) (S)</option>
        <option value="Hex(1)Pent(1) (T)">Hex(1)Pent(1) (T)</option>
        <option value="Hex(1)Pent(2) (S)">Hex(1)Pent(2) (S)</option>
        <option value="Hex(1)Pent(2) (T)">Hex(1)Pent(2) (T)</option>
        <option value="Hex(10)Phos(3) (S)">Hex(10)Phos(3) (S)</option>
        <option value="Hex(10)Phos(3) (T)">Hex(10)Phos(3) (T)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(1) (S)">Hex(2)HexNAc(1) (S)</option>
        <option value="Hex(2)HexNAc(1) (T)">Hex(2)HexNAc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (S)">Hex(2)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (T)">Hex(2)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (S)">Hex(2)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (T)">Hex(2)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (S)">Hex(2)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (T)">Hex(2)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (S)">Hex(2)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (T)">Hex(2)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (S)">Hex(2)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (T)">Hex(2)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (S)">Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (T)">Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2) (S)">Hex(2)HexNAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2) (T)">Hex(2)HexNAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (S)">Hex(2)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (T)">Hex(2)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (N)">Hex(2)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (S)">Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (T)">Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (S)">Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (T)">Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3) (S)">Hex(2)HexNAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3) (T)">Hex(2)HexNAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (S)">Hex(2)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (T)">Hex(2)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (S)">Hex(2)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (T)">Hex(2)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (S)">Hex(2)HexNAc(3)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (T)">Hex(2)HexNAc(3)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (S)">Hex(2)HexNAc(3)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (T)">Hex(2)HexNAc(3)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (S)">Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (T)">Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(4) (S)">Hex(2)HexNAc(4) (S)</option>
        <option value="Hex(2)HexNAc(4) (T)">Hex(2)HexNAc(4) (T)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (S)">Hex(2)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (T)">Hex(2)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(5) (S)">Hex(2)HexNAc(5) (S)</option>
        <option value="Hex(2)HexNAc(5) (T)">Hex(2)HexNAc(5) (T)</option>
        <option value="Hex(2)NeuAc(1) (S)">Hex(2)NeuAc(1) (S)</option>
        <option value="Hex(2)NeuAc(1) (T)">Hex(2)NeuAc(1) (T)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3) (S)">Hex(3) (S)</option>
        <option value="Hex(3) (T)">Hex(3) (T)</option>
        <option value="Hex(3)HexNAc(1) (S)">Hex(3)HexNAc(1) (S)</option>
        <option value="Hex(3)HexNAc(1) (T)">Hex(3)HexNAc(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (S)">Hex(3)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (T)">Hex(3)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2) (S)">Hex(3)HexNAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2) (T)">Hex(3)HexNAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(1) (N)">Hex(3)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (S)">Hex(3)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (T)">Hex(3)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)Pent(1) (N)">Hex(3)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2)Phos(1) (N)">Hex(3)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(3)HexNAc(3) (N)">Hex(3)HexNAc(3) (N)</option>
        <option value="Hex(3)HexNAc(3) (S)">Hex(3)HexNAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3) (T)">Hex(3)HexNAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (S)">Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (T)">Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (S)">Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (T)">Hex(3)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (S)">Hex(3)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (T)">Hex(3)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)Pent(1) (N)">Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (S)">Hex(3)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (T)">Hex(3)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(3)HexNAc(4) (S)">Hex(3)HexNAc(4) (S)</option>
        <option value="Hex(3)HexNAc(4) (T)">Hex(3)HexNAc(4) (T)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(1) (N)">Hex(3)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Pent(1) (N)">Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Sulf(1) (N)">Hex(3)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(5) (N)">Hex(3)HexNAc(5) (N)</option>
        <option value="Hex(3)HexNAc(5) (S)">Hex(3)HexNAc(5) (S)</option>
        <option value="Hex(3)HexNAc(5) (T)">Hex(3)HexNAc(5) (T)</option>
        <option value="Hex(3)HexNAc(5)Sulf(1) (N)">Hex(3)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6) (N)">Hex(3)HexNAc(6) (N)</option>
        <option value="Hex(3)HexNAc(6) (S)">Hex(3)HexNAc(6) (S)</option>
        <option value="Hex(3)HexNAc(6) (T)">Hex(3)HexNAc(6) (T)</option>
        <option value="Hex(3)HexNAc(6)NeuAc(1) (N)">Hex(3)HexNAc(6)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(1) (N)">Hex(3)HexNAc(6)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(2) (N)">Hex(3)HexNAc(6)Sulf(2) (N)</option>
        <option value="Hex(3)HexNAc(7) (N)">Hex(3)HexNAc(7) (N)</option>
        <option value="Hex(3)HexNAc(7)Sulf(1) (N)">Hex(3)HexNAc(7)Sulf(1) (N)</option>
        <option value="Hex(3)Phos(1) (S)">Hex(3)Phos(1) (S)</option>
        <option value="Hex(3)Phos(1) (T)">Hex(3)Phos(1) (T)</option>
        <option value="Hex(4) (S)">Hex(4) (S)</option>
        <option value="Hex(4) (T)">Hex(4) (T)</option>
        <option value="Hex(4)HexNAc(1) (S)">Hex(4)HexNAc(1) (S)</option>
        <option value="Hex(4)HexNAc(1) (T)">Hex(4)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2) (N)">Hex(4)HexNAc(2) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (N)">Hex(4)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(2)Pent(1) (N)">Hex(4)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(3) (N)">Hex(4)HexNAc(3) (N)</option>
        <option value="Hex(4)HexNAc(3) (S)">Hex(4)HexNAc(3) (S)</option>
        <option value="Hex(4)HexNAc(3) (T)">Hex(4)HexNAc(3) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (N)">Hex(4)HexNAc(3)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (S)">Hex(4)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (T)">Hex(4)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(2) (N)">Hex(4)HexNAc(3)NeuAc(2) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuGc(1) (N)">Hex(4)HexNAc(3)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)Pent(1) (N)">Hex(4)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (S)">Hex(4)HexNAc(4) (S)</option>
        <option value="Hex(4)HexNAc(4) (T)">Hex(4)HexNAc(4) (T)</option>
        <option value="Hex(4)HexNAc(4)Me(2)Pent(1) (N)">Hex(4)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (N)">Hex(4)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (S)">Hex(4)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (T)">Hex(4)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)Pent(1) (N)">Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(1) (N)">Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (S)">Hex(4)HexNAc(4)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (T)">Hex(4)HexNAc(4)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(5) (N)">Hex(4)HexNAc(5) (N)</option>
        <option value="Hex(4)HexNAc(5)NeuAc(1) (N)">Hex(4)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(5)Sulf(1) (N)">Hex(4)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(6) (N)">Hex(4)HexNAc(6) (N)</option>
        <option value="Hex(4)Phos(1) (S)">Hex(4)Phos(1) (S)</option>
        <option value="Hex(4)Phos(1) (T)">Hex(4)Phos(1) (T)</option>
        <option value="Hex(5) (S)">Hex(5) (S)</option>
        <option value="Hex(5) (T)">Hex(5) (T)</option>
        <option value="Hex(5)HexNAc(1) (S)">Hex(5)HexNAc(1) (S)</option>
        <option value="Hex(5)HexNAc(1) (T)">Hex(5)HexNAc(1) (T)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(2)Phos(1) (N)">Hex(5)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(5)HexNAc(3) (N)">Hex(5)HexNAc(3) (N)</option>
        <option value="Hex(5)HexNAc(3)Pent(1) (N)">Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4) (S)">Hex(5)HexNAc(4) (S)</option>
        <option value="Hex(5)HexNAc(4) (T)">Hex(5)HexNAc(4) (T)</option>
        <option value="Hex(5)HexNAc(4)Me(2)Pent(1) (N)">Hex(5)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuGc(1) (N)">Hex(5)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)Sulf(1) (N)">Hex(5)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(5) (N)">Hex(5)HexNAc(5) (N)</option>
        <option value="Hex(5)HexNAc(5) (S)">Hex(5)HexNAc(5) (S)</option>
        <option value="Hex(5)HexNAc(5) (T)">Hex(5)HexNAc(5) (T)</option>
        <option value="Hex(5)Phos(1) (S)">Hex(5)Phos(1) (S)</option>
        <option value="Hex(5)Phos(1) (T)">Hex(5)Phos(1) (T)</option>
        <option value="Hex(5)Phos(3) (S)">Hex(5)Phos(3) (S)</option>
        <option value="Hex(5)Phos(3) (T)">Hex(5)Phos(3) (T)</option>
        <option value="Hex(6)HexNAc(2) (N)">Hex(6)HexNAc(2) (N)</option>
        <option value="Hex(6)HexNAc(2)Phos(1) (N)">Hex(6)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(3) (N)">Hex(6)HexNAc(3) (N)</option>
        <option value="Hex(6)HexNAc(3)Phos(1) (N)">Hex(6)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(4) (N)">Hex(6)HexNAc(4) (N)</option>
        <option value="Hex(6)HexNAc(4) (S)">Hex(6)HexNAc(4) (S)</option>
        <option value="Hex(6)HexNAc(4) (T)">Hex(6)HexNAc(4) (T)</option>
        <option value="Hex(6)HexNAc(4)Me(3) (N)">Hex(6)HexNAc(4)Me(3) (N)</option>
        <option value="Hex(6)HexNAc(4)Me(3)Pent(1) (N)">Hex(6)HexNAc(4)Me(3)Pent(1) (N)</option>
        <option value="Hex(6)HexNAc(5) (N)">Hex(6)HexNAc(5) (N)</option>
        <option value="Hex(6)Phos(1) (S)">Hex(6)Phos(1) (S)</option>
        <option value="Hex(6)Phos(1) (T)">Hex(6)Phos(1) (T)</option>
        <option value="Hex(6)Phos(3) (S)">Hex(6)Phos(3) (S)</option>
        <option value="Hex(6)Phos(3) (T)">Hex(6)Phos(3) (T)</option>
        <option value="Hex(7)HexNAc(1) (N)">Hex(7)HexNAc(1) (N)</option>
        <option value="Hex(7)HexNAc(2) (N)">Hex(7)HexNAc(2) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(1) (N)">Hex(7)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(2) (N)">Hex(7)HexNAc(2)Phos(2) (N)</option>
        <option value="Hex(7)HexNAc(3) (N)">Hex(7)HexNAc(3) (N)</option>
        <option value="Hex(7)HexNAc(3)Phos(1) (N)">Hex(7)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(4) (N)">Hex(7)HexNAc(4) (N)</option>
        <option value="Hex(7)Phos(3) (S)">Hex(7)Phos(3) (S)</option>
        <option value="Hex(7)Phos(3) (T)">Hex(7)Phos(3) (T)</option>
        <option value="Hex(8)HexNAc(1) (N)">Hex(8)HexNAc(1) (N)</option>
        <option value="Hex(8)HexNAc(2) (N)">Hex(8)HexNAc(2) (N)</option>
        <option value="Hex(8)Phos(3) (S)">Hex(8)Phos(3) (S)</option>
        <option value="Hex(8)Phos(3) (T)">Hex(8)Phos(3) (T)</option>
        <option value="Hex(9)HexNAc(2) (N)">Hex(9)HexNAc(2) (N)</option>
        <option value="Hex(9)Phos(3) (S)">Hex(9)Phos(3) (S)</option>
        <option value="Hex(9)Phos(3) (T)">Hex(9)Phos(3) (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (S)">HexN (S)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(1) (S)">HexNAc(1)dHex(1) (S)</option>
        <option value="HexNAc(1)dHex(1) (T)">HexNAc(1)dHex(1) (T)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(1)Kdn(2) (S)">HexNAc(1)Kdn(2) (S)</option>
        <option value="HexNAc(1)Kdn(2) (T)">HexNAc(1)Kdn(2) (T)</option>
        <option value="HexNAc(1)NeuAc(1) (S)">HexNAc(1)NeuAc(1) (S)</option>
        <option value="HexNAc(1)NeuAc(1) (T)">HexNAc(1)NeuAc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(1) (S)">HexNAc(1)NeuGc(1) (S)</option>
        <option value="HexNAc(1)NeuGc(1) (T)">HexNAc(1)NeuGc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(2) (S)">HexNAc(1)NeuGc(2) (S)</option>
        <option value="HexNAc(1)NeuGc(2) (T)">HexNAc(1)NeuGc(2) (T)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2) (S)">HexNAc(2) (S)</option>
        <option value="HexNAc(2) (T)">HexNAc(2) (T)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="HexNAc(2)NeuAc(1) (S)">HexNAc(2)NeuAc(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1) (T)">HexNAc(2)NeuAc(1) (T)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (S)">HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (T)">HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="HexNAc(2)NeuGc(1) (S)">HexNAc(2)NeuGc(1) (S)</option>
        <option value="HexNAc(2)NeuGc(1) (T)">HexNAc(2)NeuGc(1) (T)</option>
        <option value="HexNAc(3) (S)">HexNAc(3) (S)</option>
        <option value="HexNAc(3) (T)">HexNAc(3) (T)</option>
        <option value="HexNAc(3)Sulf(1) (S)">HexNAc(3)Sulf(1) (S)</option>
        <option value="HexNAc(3)Sulf(1) (T)">HexNAc(3)Sulf(1) (T)</option>
        <option value="HexNAc(4) (S)">HexNAc(4) (S)</option>
        <option value="HexNAc(4) (T)">HexNAc(4) (T)</option>
        <option value="HexNAc(5) (S)">HexNAc(5) (S)</option>
        <option value="HexNAc(5) (T)">HexNAc(5) (T)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IASD (C)">IASD (C)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL (Protein N-term)">ICPL (Protein N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6) (Protein N-term)">ICPL:13C(6) (Protein N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (Protein N-term)">ICPL:13C(6)2H(4) (Protein N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (Protein N-term)">ICPL:2H(4) (Protein N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (Protein N-term)">iTRAQ4plex (Protein N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (Protein N-term)">iTRAQ8plex (Protein N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(2)15N(2) (K)">Label:13C(2)15N(2) (K)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-K (Protein N-term)">LG-Hlactam-K (Protein N-term)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-K (Protein N-term)">LG-lactam-K (Protein N-term)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="LRGG+dimethyl (K)">LRGG+dimethyl (K)</option>
        <option value="LRGG+methyl (K)">LRGG+methyl (K)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lys-loss (Protein C-term K)">Lys-loss (Protein C-term K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Met-loss (Protein N-term M)">Met-loss (Protein N-term M)</option>
        <option value="Met-loss+Acetyl (Protein N-term M)">Met-loss+Acetyl (Protein N-term M)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Protein N-term)">Methyl (Protein N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(2) (N-term)">Methyl:2H(2) (N-term)</option>
        <option value="Methyl:2H(2)13C (C)">Methyl:2H(2)13C (C)</option>
        <option value="Methyl:2H(2)13C (C-term)">Methyl:2H(2)13C (C-term)</option>
        <option value="Methyl:2H(2)13C (D)">Methyl:2H(2)13C (D)</option>
        <option value="Methyl:2H(2)13C (E)">Methyl:2H(2)13C (E)</option>
        <option value="Methyl:2H(2)13C (H)">Methyl:2H(2)13C (H)</option>
        <option value="Methyl:2H(2)13C (I)">Methyl:2H(2)13C (I)</option>
        <option value="Methyl:2H(2)13C (K)">Methyl:2H(2)13C (K)</option>
        <option value="Methyl:2H(2)13C (L)">Methyl:2H(2)13C (L)</option>
        <option value="Methyl:2H(2)13C (N)">Methyl:2H(2)13C (N)</option>
        <option value="Methyl:2H(2)13C (N-term)">Methyl:2H(2)13C (N-term)</option>
        <option value="Methyl:2H(2)13C (Protein N-term)">Methyl:2H(2)13C (Protein N-term)</option>
        <option value="Methyl:2H(2)13C (Q)">Methyl:2H(2)13C (Q)</option>
        <option value="Methyl:2H(2)13C (R)">Methyl:2H(2)13C (R)</option>
        <option value="Methyl:2H(2)13C (S)">Methyl:2H(2)13C (S)</option>
        <option value="Methyl:2H(2)13C (T)">Methyl:2H(2)13C (T)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3) (X)">Methyl:2H(3) (X)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (N-term)">Methyl:2H(3)13C(1) (N-term)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="Microcin (Protein C-term)">Microcin (Protein C-term)</option>
        <option value="MicrocinC7 (Protein C-term)">MicrocinC7 (Protein C-term)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD (U)">MolybdopterinGD (U)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoleyl (Protein N-term G)">Myristoleyl (Protein N-term G)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="Myristoyl+Delta:H(-4) (Protein N-term G)">Myristoyl+Delta:H(-4) (Protein N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NO_SMX_SMCT (C)">NO_SMX_SMCT (C)</option>
        <option value="NP40 (N-term)">NP40 (N-term)</option>
        <option value="NQIGG (K)">NQIGG (K)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (U)">Oxidation (U)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (Protein N-term)">Palmitoyl (Protein N-term)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="Pentose (S)">Pentose (S)</option>
        <option value="Pentose (T)">Pentose (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHex (T)">PhosphoHex (T)</option>
        <option value="PhosphoHex(2) (N)">PhosphoHex(2) (N)</option>
        <option value="PhosphoHex(2) (S)">PhosphoHex(2) (S)</option>
        <option value="PhosphoHex(2) (T)">PhosphoHex(2) (T)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (Protein N-term)">Propionyl (Protein N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (C-term)">Propyl (C-term)</option>
        <option value="Propyl (D)">Propyl (D)</option>
        <option value="Propyl (E)">Propyl (E)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl (Protein C-term)">Propyl (Protein C-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="PyruvicAcidIminyl (Protein N-term C)">PyruvicAcidIminyl (Protein N-term C)</option>
        <option value="PyruvicAcidIminyl (Protein N-term V)">PyruvicAcidIminyl (Protein N-term V)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="RNPXL (N-term K)">RNPXL (N-term K)</option>
        <option value="RNPXL (N-term R)">RNPXL (N-term R)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="RNPXlink2 (F)">RNPXlink2 (F)</option>
        <option value="RNPXlink2 (K)">RNPXlink2 (K)</option>
        <option value="RNPXlink2 (L)">RNPXlink2 (L)</option>
        <option value="RNPXlink3 (C)">RNPXlink3 (C)</option>
        <option value="RNPXlink3 (F)">RNPXlink3 (F)</option>
        <option value="RNPXlink4 (C)">RNPXlink4 (C)</option>
        <option value="RNPXlink5 (F)">RNPXlink5 (F)</option>
        <option value="RNPXlink5 (Y)">RNPXlink5 (Y)</option>
        <option value="s-GlcNAc (S)">s-GlcNAc (S)</option>
        <option value="s-GlcNAc (T)">s-GlcNAc (T)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;LacticAcid (Protein N-term S)">Ser-&gt;LacticAcid (Protein N-term S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="SMCC-maleimide (C)">SMCC-maleimide (C)</option>
        <option value="spermidine (Q)">spermidine (Q)</option>
        <option value="spermine (Q)">spermine (Q)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl (Protein N-term)">Succinyl (Protein N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (N-term C)">Thiazolidine (N-term C)</option>
        <option value="Thioacyl (K)">Thioacyl (K)</option>
        <option value="Thioacyl (X)">Thioacyl (X)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (Protein N-term)">TMT (Protein N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (Protein N-term)">TMT2plex (Protein N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (Protein N-term)">TMT6plex (Protein N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (Protein N-term A)">Trimethyl (Protein N-term A)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Tripalmitate (Protein N-term C)">Tripalmitate (Protein N-term C)</option>
        <option value="Tris (N)">Tris (N)</option>
        <option value="Triton (C-term)">Triton (C-term)</option>
        <option value="Triton (N-term)">Triton (N-term)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tween20 (N-term)">Tween20 (N-term)</option>
        <option value="Tween80 (C-term)">Tween80 (C-term)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-amide (C)">Ub-amide (C)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:DMP (K)">Xlink:DMP (K)</option>
        <option value="Xlink:DMP (Protein N-term)">Xlink:DMP (Protein N-term)</option>
        <option value="Xlink:DMP-de (K)">Xlink:DMP-de (K)</option>
        <option value="Xlink:DMP-de (Protein N-term)">Xlink:DMP-de (Protein N-term)</option>
        <option value="Xlink:DMP-s (K)">Xlink:DMP-s (K)</option>
        <option value="Xlink:DMP-s (Protein N-term)">Xlink:DMP-s (Protein N-term)</option>
        <option value="Xlink:DSS (K)">Xlink:DSS (K)</option>
        <option value="Xlink:DSS (Protein N-term)">Xlink:DSS (Protein N-term)</option>
        <option value="Xlink:DSS-NH2 (K)">Xlink:DSS-NH2 (K)</option>
        <option value="Xlink:DSS-NH2 (Protein N-term)">Xlink:DSS-NH2 (Protein N-term)</option>
        <option value="Xlink:DST (K)">Xlink:DST (K)</option>
        <option value="Xlink:DST (Protein N-term)">Xlink:DST (Protein N-term)</option>
        <option value="Xlink:DTSSP (K)">Xlink:DTSSP (K)</option>
        <option value="Xlink:DTSSP (Protein N-term)">Xlink:DTSSP (Protein N-term)</option>
        <option value="Xlink:EGS (K)">Xlink:EGS (K)</option>
        <option value="Xlink:EGS (Protein N-term)">Xlink:EGS (Protein N-term)</option>
        <option value="Xlink:EGScleaved (K)">Xlink:EGScleaved (K)</option>
        <option value="Xlink:EGScleaved (Protein N-term)">Xlink:EGScleaved (Protein N-term)</option>
        <option value="Xlink:SMCC (C)">Xlink:SMCC (C)</option>
        <option value="Xlink:SSD (K)">Xlink:SSD (K)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <expand macro="list_string_san"/>
      </param>
      <param name="variable_max_per_peptide" argument="-modifications:variable_max_per_peptide" type="integer" optional="true" value="2" label="Maximum number of residues carrying a variable modification per candidate peptide" help=""/>
    </section>
    <section name="peptide" title="Settings for digesting proteins into peptides" help="" expanded="false">
      <param name="min_size" argument="-peptide:min_size" type="integer" optional="true" value="5" label="Minimum size a peptide must have after digestion to be considered in the search" help=""/>
      <param name="missed_cleavages" argument="-peptide:missed_cleavages" type="integer" optional="true" value="2" label="Number of missed cleavages" help=""/>
      <param name="enzyme" argument="-peptide:enzyme" type="select" optional="false" label="The enzyme used for peptide digestion" help="">
        <option value="Trypsin" selected="true">Trypsin</option>
        <option value="Chymotrypsin">Chymotrypsin</option>
        <option value="Chymotrypsin/P">Chymotrypsin/P</option>
        <option value="CNBr">CNBr</option>
        <option value="Formic_acid">Formic_acid</option>
        <option value="Asp-N">Asp-N</option>
        <option value="Lys-C">Lys-C</option>
        <option value="Lys-N">Lys-N</option>
        <option value="Lys-C/P">Lys-C/P</option>
        <option value="Arg-C/P">Arg-C/P</option>
        <option value="Arg-C">Arg-C</option>
        <option value="Alpha-lytic protease">Alpha-lytic protease</option>
        <option value="2-iodobenzoate">2-iodobenzoate</option>
        <option value="iodosobenzoate">iodosobenzoate</option>
        <option value="staphylococcal protease/D">staphylococcal protease/D</option>
        <option value="proline-endopeptidase/HKR">proline-endopeptidase/HKR</option>
        <option value="Glu-C+P">Glu-C+P</option>
        <option value="PepsinA + P">PepsinA + P</option>
        <option value="cyanogen-bromide">cyanogen-bromide</option>
        <option value="Clostripain/P">Clostripain/P</option>
        <option value="elastase-trypsin-chymotrypsin">elastase-trypsin-chymotrypsin</option>
        <option value="no cleavage">no cleavage</option>
        <option value="unspecific cleavage">unspecific cleavage</option>
        <option value="PepsinA">PepsinA</option>
        <option value="TrypChymo">TrypChymo</option>
        <option value="Trypsin/P">Trypsin/P</option>
        <option value="V8-DE">V8-DE</option>
        <option value="V8-E">V8-E</option>
        <option value="leukocyte elastase">leukocyte elastase</option>
        <option value="proline endopeptidase">proline endopeptidase</option>
        <option value="glutamyl endopeptidase">glutamyl endopeptidase</option>
        <option value="Asp-N/B">Asp-N/B</option>
        <option value="Asp-N_ambic">Asp-N_ambic</option>
        <expand macro="list_string_san"/>
      </param>
    </section>
    <section name="cross_linker" title="Description of the cross-linker reagent" help="" expanded="false">
      <param name="residue1" argument="-cross_linker:residue1" type="text" optional="true" value="K N-term" label="Comma separated residues, that the first side of a bifunctional cross-linker can attach to" help=" (space separated list, in order to allow for spaces in list items surround them by single quotes)">
        <expand macro="list_string_val"/>
        <expand macro="list_string_san"/>
      </param>
      <param name="residue2" argument="-cross_linker:residue2" type="text" optional="true" value="K N-term" label="Comma separated residues, that the second side of a bifunctional cross-linker can attach to" help=" (space separated list, in order to allow for spaces in list items surround them by single quotes)">
        <expand macro="list_string_val"/>
        <expand macro="list_string_san"/>
      </param>
      <param name="mass" argument="-cross_linker:mass" type="float" optional="true" value="138.0680796" label="Mass of the light cross-linker, linking two residues on one or two peptides" help=""/>
      <param name="mass_mono_link" argument="-cross_linker:mass_mono_link" type="text" optional="true" value="156.07864431 155.094628715" label="Possible masses of the linker, when attached to only one peptide" help=" (space separated list, in order to allow for spaces in list items surround them by single quotes)">
        <expand macro="list_float_valsan"/>
      </param>
      <param name="name" argument="-cross_linker:name" type="text" optional="true" value="DSS" label="Name of the searched cross-link, used to resolve ambiguity of equal masses" help="(e.g. DSS or BS3)">
        <expand macro="list_string_san"/>
      </param>
    </section>
    <section name="algorithm" title="Additional algorithm settings" help="" expanded="false">
      <param name="number_top_hits" argument="-algorithm:number_top_hits" type="integer" optional="true" value="5" label="Number of top hits reported for each spectrum pai" help=""/>
      <param name="deisotope" argument="-algorithm:deisotope" display="radio" type="select" optional="false" label="Set to true, if the input spectra should be deisotoped before any other processing steps" help="If set to auto the spectra will be deisotoped, if the fragment mass tolerance is &lt; 0.1 Da or &lt; 100 ppm (0.1 Da at a mass of 1000)">
        <option value="true">true</option>
        <option value="false">false</option>
        <option value="auto" selected="true">auto</option>
        <expand macro="list_string_san"/>
      </param>
      <param name="use_sequence_tags" argument="-algorithm:use_sequence_tags" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Use sequence tags (de novo sequencing of short fragments) to filter out candidates before scoring" help="This will make the search faster, but can impact the sensitivity positively or negatively, depending on the dataset"/>
      <param name="sequence_tag_min_length" argument="-algorithm:sequence_tag_min_length" type="integer" optional="true" value="2" label="Minimal length of sequence tags to use for filtering candidates" help="Longer tags will make the search faster but much less sensitive. Ignored if 'algorithm:use_sequence_tags' is false"/>
    </section>
    <section name="ions" title="Ion types to search for in MS/MS spectra" help="" expanded="false">
      <param name="b_ions" argument="-ions:b_ions" type="boolean" truevalue="true" falsevalue="false" checked="true" label="Search for peaks of b-ions" help=""/>
      <param name="y_ions" argument="-ions:y_ions" type="boolean" truevalue="true" falsevalue="false" checked="true" label="Search for peaks of y-ions" help=""/>
      <param name="a_ions" argument="-ions:a_ions" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Search for peaks of a-ions" help=""/>
      <param name="x_ions" argument="-ions:x_ions" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Search for peaks of x-ions" help=""/>
      <param name="c_ions" argument="-ions:c_ions" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Search for peaks of c-ions" help=""/>
      <param name="z_ions" argument="-ions:z_ions" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Search for peaks of z-ions" help=""/>
      <param name="neutral_losses" argument="-ions:neutral_losses" type="boolean" truevalue="true" falsevalue="false" checked="true" label="Search for neutral losses of H2O and H3N" help=""/>
    </section>
    <expand macro="adv_opts_macro">
      <param name="decoy_database" argument="-decoy_database" type="data" format="fasta" optional="true" label="Input file containing the decoy protein database" help="Decoys can also be included in the normal database file instead (or additionally) select fasta data sets(s)"/>
      <param name="force" argument="-force" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Overwrite tool specific checks" help=""/>
      <param name="test" argument="-test" type="hidden" optional="true" value="False" label="Enables the test mode (needed for internal use only)" help="">
        <expand macro="list_string_san"/>
      </param>
    </expand>
    <param name="OPTIONAL_OUTPUTS" type="select" multiple="true" label="Optional outputs" optional="false">
      <option value="out_idXML_FLAG">out_idXML (Search for neutral losses of H2O and H3N)</option>
      <option value="out_mzIdentML_FLAG">out_mzIdentML (Search for neutral losses of H2O and H3N)</option>
      <option value="out_xquestxml_FLAG">out_xquestxml (Search for neutral losses of H2O and H3N)</option>
      <option value="out_xquest_specxml_FLAG">out_xquest_specxml (Search for neutral losses of H2O and H3N)</option>
      <option value="ctd_out_FLAG">Output used ctd (ini) configuration file</option>
    </param>
  </inputs>
  <outputs>
    <data name="out_idXML" label="${tool.name} on ${on_string}: out_idXML" format="idxml">
      <filter>OPTIONAL_OUTPUTS is not None and "out_idXML_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
    <data name="out_mzIdentML" label="${tool.name} on ${on_string}: out_mzIdentML" format="mzid">
      <filter>OPTIONAL_OUTPUTS is not None and "out_mzIdentML_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
    <data name="out_xquestxml" label="${tool.name} on ${on_string}: out_xquestxml" format="xquest.xml">
      <filter>OPTIONAL_OUTPUTS is not None and "out_xquestxml_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
    <data name="out_xquest_specxml" label="${tool.name} on ${on_string}: out_xquest_specxml" format="spec.xml">
      <filter>OPTIONAL_OUTPUTS is not None and "out_xquest_specxml_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
    <data name="stdout" format="txt" label="${tool.name} on ${on_string}: stdout">
      <filter>OPTIONAL_OUTPUTS is None</filter>
    </data>
    <data name="ctd_out" format="xml" label="${tool.name} on ${on_string}: ctd">
      <filter>OPTIONAL_OUTPUTS is not None and "ctd_out_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
  </outputs>
  <tests>
    <expand macro="autotest_OpenPepXLLF"/>
    <expand macro="manutest_OpenPepXLLF"/>
  </tests>
  <help><![CDATA[Tool for protein-protein cross linking with label-free linkers.


For more information, visit http://www.openms.de/documentation/TOPP_OpenPepXLLF.html]]></help>
  <expand macro="references"/>
</tool>