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    <!-- http://purl.obolibrary.org/obo/CHEBI_24532 -->

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        <rdfs:label>organic heterocyclic compound</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_25858 -->

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        <rdfs:label>1,7-dimethylxanthine</rdfs:label>
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        <oboInOwl:hasDbXref>pubmed:20853468</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref>pubmed:11090584</oboInOwl:hasDbXref>
        <ns3:IAO_0000115>A dimethylxanthine having the two methyl groups located at positions 1 and 7. It is a metabolite of caffeine and theobromine in animals.</ns3:IAO_0000115>
        <ns4:inchi_key_string>QUNWUDVFRNGTCO-UHFFFAOYSA-N</ns4:inchi_key_string>
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        <oboInOwl:hasDbXref>pubmed:2882985</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>3,7-Dihydro-1,7-dimethyl-1H-purine-2,6-dione</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:10572151</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref>cas:611-59-6</oboInOwl:hasDbXref>
        <ns4:smiles_string>Cn1c(=O)nc2ncn(C)c2c1=O</ns4:smiles_string>
        <oboInOwl:hasDbXref>pubmed:17655324</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:3798364</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>p-Xanthine</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasDbXref>pubmed:1128545</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:10877011</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:9920286</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:21380987</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:10416066</oboInOwl:hasDbXref>
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