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    <!-- http://purl.obolibrary.org/obo/CHEBI_22315 -->

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        <rdfs:label>alkaloid</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_27732 -->

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        <rdfs:label>caffeine</rdfs:label>
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        <ns4:charge rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">0</ns4:charge>
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        <oboInOwl:hasDbXref>gmelin:103040</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:22114686</oboInOwl:hasDbXref>
        <oboInOwl:hasOBONamespace>chebi_ontology</oboInOwl:hasOBONamespace>
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        <oboInOwl:hasDbXref>pubmed:11014293</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18421070</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:11410911</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:12915014</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17132260</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>theine</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasAlternativeId>CHEBI:3295</oboInOwl:hasAlternativeId>
        <oboInOwl:hasDbXref>pubmed:16528931</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>drugcentral:463</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19007524</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>cas:58-08-2</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:10983026</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17724925</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>kegg.drug:D00528</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:11312039</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>reaxys:17705</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15257305</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:9063686</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16143823</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>1,3,7-trimethylxanthine</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:23551936</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>drugbank:DB00201</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>mateina</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:8332255</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17932622</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:10924888</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:7689104</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:9067318</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:8347173</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16709440</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18513215</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>1,3,7-Trimethylxanthine</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasRelatedSynonym>cafeina</oboInOwl:hasRelatedSynonym>
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        <ns4:generalized_empirical_formula>C8H10N4O2</ns4:generalized_empirical_formula>
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        <oboInOwl:hasDbXref>pubmed:19879252</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17957400</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref>metacyc.compound:1-3-7-TRIMETHYLXANTHINE</oboInOwl:hasDbXref>
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        <ns4:inchi_key_string>RYYVLZVUVIJVGH-UHFFFAOYSA-N</ns4:inchi_key_string>
        <oboInOwl:id>CHEBI:27732</oboInOwl:id>
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        <oboInOwl:hasDbXref>pubmed:12574990</oboInOwl:hasDbXref>
        <ns3:IAO_0000115>A trimethylxanthine in which the three methyl groups are located at positions 1, 3, and 7. A purine alkaloid that occurs naturally in tea and coffee.</ns3:IAO_0000115>
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        <oboInOwl:hasRelatedSynonym>Coffein</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:8679661</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>hmdb:HMDB0001847</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17387608</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>1,3,7-trimethylpurine-2,6-dione</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:11209966</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>teina</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:20470411</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16856769</oboInOwl:hasDbXref>
        <ns4:inchi_string>InChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3</ns4:inchi_string>
        <oboInOwl:hasDbXref>pubmed:11815511</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>lincs.smallmolecule:LSM-2026</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19084078</oboInOwl:hasDbXref>
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        <oboInOwl:hasRelatedSynonym>CAFFEINE</oboInOwl:hasRelatedSynonym>
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        <ns4:smiles_string>Cn1c(=O)c2c(ncn2C)n(C)c1=O</ns4:smiles_string>
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        <oboInOwl:hasRelatedSynonym>methyltheobromine</oboInOwl:hasRelatedSynonym>
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