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    <AnnotationProperty rdf:about="http://purl.obolibrary.org/obo/IAO_0000412"/>
    <AnnotationProperty rdf:about="http://purl.obolibrary.org/obo/IAO_0000115"/>
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    <!-- http://purl.obolibrary.org/obo/RO_0000087 -->

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    <!-- http://purl.obolibrary.org/obo/CHEBI_15940 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_15940">
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">nicotinic acid</rdfs:label>
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                <someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_25212"/>
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        <ns5:monoisotopicmass rdf:datatype="http://www.w3.org/2001/XMLSchema#string">123.032</ns5:monoisotopicmass>
        <ns5:mass rdf:datatype="http://www.w3.org/2001/XMLSchema#string">123.10944</ns5:mass>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">3-Pyridinecarboxylic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">3-Pyridylcarboxylic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">3-carboxypyridine</oboInOwl:hasRelatedSynonym>
        <ns3:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">A pyridinemonocarboxylic acid that is pyridine in which the hydrogen at position 3 is replaced by a carboxy group.</ns3:IAO_0000115>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Beilstein:109591</oboInOwl:hasDbXref>
        <ns5:formula rdf:datatype="http://www.w3.org/2001/XMLSchema#string">C6H5NO2</ns5:formula>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CAS:59-67-6</oboInOwl:hasDbXref>
        <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:15940</oboInOwl:id>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:25538</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:44319</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:7559</oboInOwl:hasAlternativeId>
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        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Drug_Central:2835</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Gmelin:3340</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">HMDB:HMDB0001488</oboInOwl:hasDbXref>
        <ns5:inchi rdf:datatype="http://www.w3.org/2001/XMLSchema#string">InChI=1S/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9)</ns5:inchi>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">KEGG:C00253</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">KEGG:D00049</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">KNApSAcK:C00000208</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">LINCS:LSM-4676</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MetaCyc:NIACINE</oboInOwl:hasDbXref>
        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">NICOTINIC ACID</oboInOwl:hasExactSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Niacin</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Nicotinic acid</oboInOwl:hasExactSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Nikotinsaeure</oboInOwl:hasRelatedSynonym>
        <ns5:smiles rdf:datatype="http://www.w3.org/2001/XMLSchema#string">OC(=O)c1cccnc1</ns5:smiles>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">P.P. factor</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:12789870</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:15037193</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:15183629</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:19592242</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:19678716</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:19779335</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:20979384</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:21632263</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:22116693</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:22155410</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:22458880</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:22770225</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:24568240</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:24675661</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:24975217</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:25040591</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:25241762</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:25429652</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PMID:4259917</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PP factor</oboInOwl:hasRelatedSynonym>
        <ns5:inchikey rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PVNIIMVLHYAWGP-UHFFFAOYSA-N</ns5:inchikey>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Reaxys:109591</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Wikipedia:Niacin</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">acide nicotinique</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">acido nicotinico</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">acidum nicotinicum</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">anti-pellagra vitamin</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">beta-pyridinecarboxylic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasOBONamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">chebi_ontology</oboInOwl:hasOBONamespace>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">m-pyridinecarboxylic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">nicotinic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">nicotinic acid</oboInOwl:hasExactSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pellagra preventive factor</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pyridine-3-carboxylic acid</oboInOwl:hasExactSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pyridine-beta-carboxylic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasRelatedSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">vitamin B3</oboInOwl:hasRelatedSynonym>
        <oboInOwl:inSubset rdf:resource="http://purl.oboInOwllibrary.org/oboInOwl/chebi#3_STAR"/>
        <ns3:IAO_0000412 rdf:resource="http://purl.obolibrary.org/obo/chebi.owl"/>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_25212 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_25212">
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">metabolite</rdfs:label>
    </Class>
    


    <!-- http://purl.obolibrary.org/obo/CHEBI_26416 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_26416">
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pyridine alkaloid</rdfs:label>
    </Class>
    


    <!-- http://purl.obolibrary.org/obo/CHEBI_26420 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_26420">
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pyridinemonocarboxylic acid</rdfs:label>
    </Class>
    


    <!-- http://purl.obolibrary.org/obo/CHEBI_32544 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_32544">
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">nicotinate</rdfs:label>
    </Class>
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