Metenolone acetate

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Metenolone acetate
Metenolone acetate.svg
Clinical data
Trade names Primobolan, Primobolan S, Primonabol, Nibal
Routes of
Synonyms NSC-74226; SH-567; SQ-16496
CAS Number
PubChem CID
Chemical and physical data
Formula C22H32O3
Molar mass 344.50 g·mol−1
3D model (Jmol)

Metenolone acetate (INN), or methenolone acetate (USAN, BANM) (brand names Primobolan, Primobolan S, Primonabol, Nibal), also known as 1-methyl-4,5α-dihydro-δ1-testosterone 17β-acetate (1-methyl-δ1-DHT 17β-acetate) or 1-methylandrost-1,4-dien-17β-ol-3-one 17β-acetate, is a synthetic, orally active anabolic-androgenic steroid (AAS) and derivative of dihydrotestosterone (DHT) that is marketed in Europe, Australia, and Mexico.[1][2][3] It has been used in the treatment of bone marrow diseases and anemia.[3] Metenolone acetate is the C17β acetate ester and a prodrug of metenolone,[1][2] and is the form of metenolone that is used orally; the form that is used via depot intramuscular injection is metenolone enanthate.[2] Along with mesterolone, metenolone acetate is one of the few AAS that is orally active but is not 17α-alkylated.[4]


  1. ^ a b J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 784–. ISBN 978-1-4757-2085-3. 
  2. ^ a b c Index Nominum 2000: International Drug Directory. Taylor & Francis. January 2000. pp. 660–661. ISBN 978-3-88763-075-1. 
  3. ^ a b I.K. Morton; Judith M. Hall (6 December 2012). Concise Dictionary of Pharmacological Agents: Properties and Synonyms. Springer Science & Business Media. pp. 178–. ISBN 978-94-011-4439-1. 
  4. ^ Kicman AT (June 2008). "Pharmacology of anabolic steroids". British Journal of Pharmacology. 154 (3): 502–21. doi:10.1038/bjp.2008.165. PMC 2439524Freely accessible. PMID 18500378.