Clostebol

Clostebol

Systematic (IUPAC) name
(8S,9S,10R,13S,14S,17S)-4-chloro-17-hydroxy-10,13-dimethyl- 1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
Clinical data
Legal status	CA: Schedule IV
Identifiers
CAS Number	1093-58-9
ATC code	none
PubChem	CID: 68947
DrugBank	DB01521 Y
ChemSpider	62171 Y
UNII	Z7D4G976SH Y
KEGG	D07731 Y
ChEMBL	CHEMBL2106571
Chemical data
Formula	C19H27ClO2
Molecular mass	322.869 g/mol
SMILES O=C4C(\Cl)=C2/[C@]([C@H]1CC[C@@]3([C@@H](O)CC[C@H]3[C@@H]1CC2)C)(C)CC4
InChI InChI=1S/C19H27ClO2/c1-18-10-8-15(21)17(20)14(18)4-3-11-12-5-6-16(22)19(12,2)9-7-13(11)18/h11-13,16,22H,3-10H2,1-2H3/t11-,12-,13-,16-,18+,19-/m0/s1 Y Key:KCZCIYZKSLLNNH-FBPKJDBXSA-N Y
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Clostebol (INN), usually as the ester clostebol acetate or clostebol enanthate, is a synthetic anabolic androgenic steroid. Clostebol is the 4-chloro derivative of the natural hormone testosterone.

It is a weak anabolic steroid which was used by athletes from the German Democratic Republic (East Germany). It is a version of testosterone that is chlorinated so as to prevent conversion to dihydrotestosterone (DHT) while also rendering the chemical incapable of conversion to estrogen.

See also

• 4-Chlorodehydromethyltestosterone

Dee Gordon of the Miami Marlins tested positive for Clostebol. 4/28/16