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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

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Accession:CHEBI:31249 term browser browse the term
Definition:A mancude carbobicyclic parent consisting of a cycloheptatriene and cyclopentadiene rings.
Synonyms:related_synonym: Azulen;   Formula=C10H8;   InChI=1S/C10H8/c1-2-5-9-7-4-8-10(9)6-3-1/h1-8H;   InChIKey=CUFNKYGDVFVPHO-UHFFFAOYSA-N;   SMILES=c1ccc2cccc2cc1;   cyclopentacycloheptene
 xref: Beilstein:969517;   CAS:275-51-4;   Gmelin:102129;   KEGG:C13392;   KNApSAcK:C00042269;   PMID:22351977;   PMID:24745894;   Reaxys:969517;   Wikipedia:Azulene

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19853
    role 19804
      biological role 19804
        biochemical role 19339
          volatile oil component 5999
            azulene 0
              4,6,8-trimethylazulene 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19853
    subatomic particle 19851
      composite particle 19851
        hadron 19851
          baryon 19851
            nucleon 19851
              atomic nucleus 19851
                atom 19851
                  main group element atom 19744
                    main group molecular entity 19744
                      s-block molecular entity 19491
                        hydrogen molecular entity 19483
                          hydrides 18748
                            organic hydride 18302
                              organic fundamental parent 18302
                                hydrocarbon 18030
                                  cyclic hydrocarbon 17080
                                    arene 17076
                                      polycyclic arene 16897
                                        ortho-fused polycyclic arene 9660
                                          ortho-fused bicyclic arene 2406
                                            azulene 0
                                              4,6,8-trimethylazulene 0
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