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    <!-- http://purl.obolibrary.org/obo/CHEBI_17158 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_17158">
        <rdfs:label>methylglyoxal</rdfs:label>
        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_26282"/>
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        <oboInOwl:hasRelatedSynonym>2-Oxopropanal</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym>alpha-ketopropionaldehyde</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>KEGG:C00546</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>acetylformyl</oboInOwl:hasRelatedSynonym>
        <ns5:inchi>InChI=1S/C3H4O2/c1-3(5)2-4/h2H,1H3</ns5:inchi>
        <oboInOwl:hasDbXref>Reaxys:906750</oboInOwl:hasDbXref>
        <ns5:inchikey>AIJULSRZWUXGPQ-UHFFFAOYSA-N</ns5:inchikey>
        <oboInOwl:hasRelatedSynonym>Pyruvaldehyde</oboInOwl:hasRelatedSynonym>
        <ns5:smiles>[H]C(=O)C(C)=O</ns5:smiles>
        <oboInOwl:hasAlternativeId>CHEBI:6875</oboInOwl:hasAlternativeId>
        <oboInOwl:hasDbXref>PMID:24168114</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>acetylformaldehyde</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>KNApSAcK:C00007562</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:24040205</oboInOwl:hasDbXref>
        <oboInOwl:hasExactSynonym>methylglyoxal</oboInOwl:hasExactSynonym>
        <oboInOwl:hasDbXref>Beilstein:906750</oboInOwl:hasDbXref>
        <oboInOwl:hasExactSynonym>2-oxopropanal</oboInOwl:hasExactSynonym>
        <oboInOwl:hasDbXref>PMID:15520007</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:26861824</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>Wikipedia:Methylglyoxal</oboInOwl:hasDbXref>
        <ns5:mass>72.06266</ns5:mass>
        <oboInOwl:hasDbXref>PMID:20096340</oboInOwl:hasDbXref>
        <ns5:formula>C3H4O2</ns5:formula>
        <oboInOwl:hasRelatedSynonym>Pyruvic aldehyde</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym>CH3COCHO</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>CAS:78-98-8</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:23543734</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref>PMID:22983866</oboInOwl:hasDbXref>
        <oboInOwl:hasAlternativeId>CHEBI:14599</oboInOwl:hasAlternativeId>
        <oboInOwl:hasRelatedSynonym>2-Ketopropionaldehyde</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasAlternativeId>CHEBI:11643</oboInOwl:hasAlternativeId>
        <ns5:monoisotopicmass>72.02113</ns5:monoisotopicmass>
        <oboInOwl:hasDbXref>PMID:19202315</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:11504881</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:10373458</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>PMID:17103372</oboInOwl:hasDbXref>
        <oboInOwl:hasExactSynonym>Methylglyoxal</oboInOwl:hasExactSynonym>
        <oboInOwl:hasAlternativeId>CHEBI:25303</oboInOwl:hasAlternativeId>
        <oboInOwl:hasDbXref>PMID:9506998</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>1,2-propanedione</oboInOwl:hasRelatedSynonym>
        <ns4:IAO_0000115>A 2-oxo aldehyde derived from propanal.</ns4:IAO_0000115>
        <oboInOwl:hasRelatedSynonym>2-oxopropionaldehyde</oboInOwl:hasRelatedSynonym>
        <oboInOwl:id>CHEBI:17158</oboInOwl:id>
        <oboInOwl:hasDbXref>PMID:23845007</oboInOwl:hasDbXref>
        <ns5:charge>0</ns5:charge>
        <oboInOwl:hasDbXref>PMID:10723098</oboInOwl:hasDbXref>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_26282 -->

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        <rdfs:label>propanals</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_27659 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_27659">
        <rdfs:label>2-oxo aldehyde</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_75771 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_75771">
        <rdfs:label>mouse metabolite</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_75772 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_75772">
        <rdfs:label>Saccharomyces cerevisiae metabolite</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_76971 -->

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        <rdfs:label>Escherichia coli metabolite</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_77746 -->

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