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Drostanolone propionate

Drostanolone propionate
Systematic (IUPAC) name


CAS number 58-19-5
ATC code A14
PubChem 6011
Chemical data
Formula C23H36O3 
Mol. mass 360.53 g/mol
SMILES search in eMolecules, PubChem
Pharmacokinetic data
Bioavailability Oral 0-2%, Intramuscular 100%
Protein binding highly
Metabolism hepatic
Half life  ?
Excretion renal
Therapeutic considerations
Pregnancy cat.


Legal status

Schedule IV(CA) Schedule III(US)

Routes Intramuscular injection or transdermal cream

Drostanolone (trade name Masteron) is an anabolic/androgenic steroid. It is known to be highly androgenic and mildly anabolic. It is incapable of aromatization and has similar properties to dihydrotestosterone. It has been successfully used as a breast cancer drug but because of the high risk of virilization safer options are prescribed.

Use in sports

Masteron is used primarily by athletes who need to retain strength while losing mass. It is beneficial to runners and athletes who must remain in a certain weight class. It has gained popularity in the bodybuilding community as a diuretic and muscle defining drug.


Ultimate Fighting Championship athlete Hermes Franca tested positive for use of Drostanolone following his July 7th 2007 lightweight championship bout against title holder Sean Sherk.

References See it was Sherk

  • Eur J Cancer Clin Oncol. 1983 Sep;19(9):1231-7.
  • Cancer Res. 1982 Nov;42(11):4408-12 Marin P, Oden B, and Bjorntorp P. Assimilation and mobilization of triglycerides in subcutaneous abdominal and femoral adipose tissue in vivo in men: effects of androgens. J Clin Endocrinol Metab 80: 239-243, 1995
  • Sem Hop. 1982 Sep 23;58(34):1919-23.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Drostanolone_propionate". A list of authors is available in Wikipedia.
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