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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:64966 term browser browse the term
Definition:A 3-oxo steroid, the structure of which is that of zymosterol, carboxy-substituted at C-4, and in which the 3-hydroxy function has been oxidised to an oxo group.
Synonyms:exact_synonym: 3-oxo-5alpha-cholesta-8,24-diene-4-carboxylic acid
 related_synonym: (5alpha)-3-oxocholesta-8,24-diene-4-carboxylic acid;   (5alpha)-4-carboxycholesta-8,24-dien-3-one;   4-carboxy-5alpha-cholesta-8(9),24-dien-3-one;   Formula=C28H42O3;   InChI=1S/C28H42O3/c1-17(2)7-6-8-18(3)20-11-12-21-19-9-10-23-25(26(30)31)24(29)14-16-28(23,5)22(19)13-15-27(20,21)4/h7,18,20-21,23,25H,6,8-16H2,1-5H3,(H,30,31)/t18-,20-,21+,23+,25?,27-,28-/m1/s1;   InChIKey=HJQQRBBWPSGDGS-UEZNEYGDSA-N;   SMILES=[H][C@@]12CCC3=C(CC[C@]4(C)[C@]([H])(CC[C@@]34[H])[C@H](C)CCC=C(C)C)[C@@]1(C)CCC(=O)C2C(O)=O
 cyclic_relationship: is_conjugate_acid_of CHEBI:64934

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Term Annotations click to browse term
  CHEBI ontology 19838
    role 19810
      biological role 19808
        biochemical role 19543
          metabolite 19506
            eukaryotic metabolite 19330
              fungal metabolite 17935
                Saccharomyces cerevisiae metabolite 17473
                  zymosterol 2
                    3-dehydro-4-carboxyzymosterol 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19838
    subatomic particle 19836
      composite particle 19836
        hadron 19836
          baryon 19836
            nucleon 19836
              atomic nucleus 19836
                atom 19836
                  main group element atom 19782
                    p-block element atom 19782
                      carbon group element atom 19722
                        carbon atom 19719
                          organic molecular entity 19719
                            organic molecule 19670
                              organic cyclic compound 19481
                                organic polycyclic compound 17242
                                  steroid 14704
                                    hydroxy steroid 14453
                                      3-hydroxy steroid 12796
                                        sterol 464
                                          3beta-sterol 458
                                            zymosterol 2
                                              3-dehydro-4-carboxyzymosterol 0
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