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CHEBI ONTOLOGY - ANNOTATIONS

The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/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.

Term:formestane
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Accession:CHEBI:75172 term browser browse the term
Definition:A 17-oxo steroid that is androst-4-ene-3,17-dione in which the hydrogen at position 4 is replaced by a hydroxy group. Formestane was the first selective, type I steroidal aromatase inhibitor, suppressing oestrogen production from anabolic steroids or prohormones. It was formerly used in the treatment of oestrogen-receptor positive breast cancer in post-meopausal women. As it has poor oral bioavailability, it had to be administered by (fortnightly) intramuscular injection. It fell out of use with the subsequent development of cheaper, orally active aromatase inhibitors. Formestane is listed by the World Anti-Doping Agency as a substance prohibited from use by athletes.
Synonyms:exact_synonym: 4-hydroxyandrost-4-ene-3,17-dione
 related_synonym: 4-OH-A;   4-OHAD;   4-hydroxy-4-androstene-3,17-dione;   4-hydroxy-Delta(4)-androstenedione;   4-hydroxyandrostenedione;   CGP 32349;   Formula=C19H26O3;   InChI=1S/C19H26O3/c1-18-10-8-15(20)17(22)14(18)4-3-11-12-5-6-16(21)19(12,2)9-7-13(11)18/h11-13,22H,3-10H2,1-2H3/t11-,12-,13-,18+,19-/m0/s1;   InChIKey=OSVMTWJCGUFAOD-KZQROQTASA-N;   Lentaron;   SMILES=[H][C@@]12CCC3=C(O)C(=O)CC[C@]3(C)[C@@]1([H])CC[C@]1(C)C(=O)CC[C@@]21[H];   formestano;   formestanum
 xref: CAS:566-48-3;   DrugBank:DB08905;   Drug_Central:1238;   KEGG:D07260
 xref_mesh: MESH:C014594
 xref: PMID:1419285;   PMID:1637664;   PMID:17207827;   PMID:22354842;   PMID:23339113;   PMID:6665821;   Reaxys:4198373;   Wikipedia:Formestane


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  CHEBI ontology 0
    role 0
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        pharmaceutical 0
          drug 0
            antineoplastic agent 0
              formestane 0
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  CHEBI ontology 0
    subatomic particle 0
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                  main group element atom 0
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                        carbon atom 0
                          organic molecular entity 0
                            heteroorganic entity 0
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                                  carbonyl compound 0
                                    ketone 0
                                      oxo steroid 0
                                        3-oxo steroid 0
                                          3-oxo-Delta(4) steroid 0
                                            formestane 0
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