Drostanolone

Drostanolone
Clinical data
Trade names	Drolban, Masteril, Masteron, others (all as drostanolone propionate)
Other names	Dromostanolone; 2α-Methyl-4,5α-dihydrotestosterone; 2α-Methyl-DHT; 2α-Methyl-5α-androstan-17β-ol-3-one
Routes of; administration	Intramuscular injection (as drostanolone propionate)
Drug class	Androgen; Anabolic steroid
Legal status
Legal status	BR: Class C5 (Anabolic steroids); CA: Schedule IV; US: Schedule III;
Identifiers
	IUPAC name (2R,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy- 2,10,13-trimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17- tetradecahydrocyclopenta[a]phenanthren-3-one;
CAS Number	58-19-5 ;
PubChem CID	6011;
DrugBank	DB00858 ;
ChemSpider	5789 ;
UNII	7DR7H00HDT;
ChEMBL	ChEMBL1582 ;
CompTox Dashboard (EPA)	DTXSID6022971 ;
ECHA InfoCard	100.000.334
Chemical and physical data
Formula	C20H32O2
Molar mass	304.474 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES C[C@@H]1C[C@]2([C@@H](CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@@H]4O)C)CC1=O)C;
	InChI InChI=1S/C20H32O2/c1-12-11-20(3)13(10-17(12)21)4-5-14-15-6-7-18(22)19(15,2)9-8-16(14)20/h12-16,18,22H,4-11H2,1-3H3/t12-,13+,14+,15+,16+,18+,19+,20+/m1/s1 ; Key:IKXILDNPCZPPRV-RFMGOVQKSA-N ;
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Drostanolone, or dromostanolone, is an anabolic–androgenic steroid (AAS) of the dihydrotestosterone (DHT) group which was never marketed. An androgen ester prodrug of drostanolone, drostanolone propionate, was formerly used in the treatment of breast cancer in women under brand names such as Drolban, Masteril, and Masteron. This has also been used non-medically for physique- or performance-enhancing purposes.