Drostanolone propionate

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Drostanolone propionate
Drostanolone propionate.svg
Clinical data
Trade names Masteron, Drolban, Masteril, Mastisol, Metormon, Permastril
  • X
Routes of
Intramuscular injection or transdermal cream
ATC code A14
Legal status
Legal status
Pharmacokinetic data
Bioavailability Oral: 0–2%
Intramuscular: 100%
Protein binding Highly
Metabolism Hepatic
Biological half-life 2–3 Days
Excretion Renal
CAS Number 58-19-5 YesY
PubChem (CID) 224004
DrugBank DB00858 YesY
ChemSpider 194604 YesY
ChEBI CHEBI:31523 YesY
Chemical and physical data
Formula C23H36O3
Molar mass 360.53 g/mol
3D model (Jmol) Interactive image

Drostanolone propionate (BAN) (brand names Masteron, Drolban, others), also known as dromostanolone propionate (USAN), as well as 2α-methyl-4,5α-dihydrotestosterone, is a synthetic anabolic-androgenic steroid (AAS) and the propionate ester of drostanolone.[1][2] It is incapable of aromatization and has similar properties to dihydrotestosterone (DHT).[citation needed] It has been successfully used to treat breast cancer, but because of the high risk of virilization, options with better tolerability are usually prescribed instead.[3] Drostanolone propionate is not orally active, and must be administered instead via intramuscular injection.[citation needed]


  1. ^ J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 652–. ISBN 978-1-4757-2085-3. 
  2. ^ Index Nominum 2000: International Drug Directory. Taylor & Francis. January 2000. pp. 377–. ISBN 978-3-88763-075-1. 
  3. ^ Chowdhury MS, Banks AJ, Bond WH, Jones WG, Ward HW (1976). "A comparison of drostanolone propionate (Masteril) and nandrolone decanoate (Deca-durabolin) in the treatment of breast carcinoma". Clin Oncol. 2 (3): 203–6. PMID 1036981.