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    <!-- http://purl.obolibrary.org/obo/CHEBI_16247 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_16247">
        <rdfs:label>phospholipid</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_26739 -->

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        <rdfs:label>sphingolipid</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/CHEBI_37550 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_37550">
        <rdfs:label>sphingosine 1-phosphate</rdfs:label>
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        <oboInOwl:hasDbXref>pubmed:17904858</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>S1P</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasDbXref>pubmed:16339142</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18155002</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16162874</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18502612</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19808013</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18973762</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17158356</oboInOwl:hasDbXref>
        <oboInOwl:hasAlternativeId>CHEBI:26742</oboInOwl:hasAlternativeId>
        <oboInOwl:hasDbXref>pubmed:18787560</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15567060</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19081473</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15992170</oboInOwl:hasDbXref>
        <ns4:inchi_string>InChI=1S/C18H38NO5P/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(20)17(19)16-24-25(21,22)23/h14-15,17-18,20H,2-13,16,19H2,1H3,(H2,21,22,23)/b15-14+/t17-,18+/m0/s1</ns4:inchi_string>
        <oboInOwl:hasDbXref>pubmed:17517398</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>C18-Sphingosine 1-phosphate</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>wikipedia.en:Sphingosine-1-phosphate</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:11331099</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15317688</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16956968</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19350109</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>Sphing-4-enine 1-phosphate</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasDbXref>pubmed:12069830</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15476260</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16129068</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16243846</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15326035</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:18541717</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>reaxys:5877213</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19082500</oboInOwl:hasDbXref>
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        <oboInOwl:hasDbXref>pubmed:15696050</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17098744</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:19662499</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>Sphingosine 1-phosphic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:12401202</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>hmdb:HMDB0000277</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>Sphingosine 1-phosphate</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:19268560</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:12730100</oboInOwl:hasDbXref>
        <oboInOwl:hasAlternativeId>CHEBI:9225</oboInOwl:hasAlternativeId>
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        <oboInOwl:hasDbXref>pubmed:17308123</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:17561264</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>D-erythro-sphingosine 1-phosphate</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:12963123</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>kegg.compound:C06124</oboInOwl:hasDbXref>
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        <ns4:smiles_string>CCCCCCCCCCCCC/C=C/[C@@H](O)[C@@H](N)COP(=O)(O)O</ns4:smiles_string>
        <oboInOwl:hasRelatedSynonym>sphingosine-1-phosphate</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:19293152</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>(2-amino-3-hydroxy-octadec-4-enoxy)phosphonic acid</oboInOwl:hasRelatedSynonym>
        <oboInOwl:id>CHEBI:37550</oboInOwl:id>
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        <oboInOwl:hasExactSynonym>(2S,3R,4E)-2-amino-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate</oboInOwl:hasExactSynonym>
        <ns4:generalized_empirical_formula>C18H38NO5P</ns4:generalized_empirical_formula>
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        <oboInOwl:hasDbXref>pubmed:17361098</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15044318</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:15143482</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>(2S,3R,4E)-2-amino-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate</oboInOwl:hasRelatedSynonym>
        <oboInOwl:hasDbXref>pubmed:16046448</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>pubmed:16940153</oboInOwl:hasDbXref>
        <oboInOwl:hasRelatedSynonym>(2S,3R,4E)-2-amino-4-octadecene-1,3-diol 1-(dihydrogen phosphate)</oboInOwl:hasRelatedSynonym>
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        <oboInOwl:hasDbXref>pubmed:15292266</oboInOwl:hasDbXref>
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        <ns3:IAO_0000115>A phosphosphingolipid that consists of sphingosine having a phospho group attached at position 1</ns3:IAO_0000115>
        <ns4:inchi_key_string>DUYSYHSSBDVJSM-KRWOKUGFSA-N</ns4:inchi_key_string>
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        <oboInOwl:hasOBONamespace>chebi_ontology</oboInOwl:hasOBONamespace>
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