Prostanozol

Prostanozol, also known as demethylstanozolol tetrahydropyran ether, is an androgen/anabolic steroid (AAS) and designer steroid which acts as a prodrug of the 17α-demethylated analogue of stanozolol (Winstrol). It was found in 2005 as an ingredient of products sold as "dietary supplements" for bodybuilding.

Prostanozol
Clinical data
Other names17α-Demethylstanozolol 17β-tetrahydropyran ether; 17β-[(Tetrahydro-2H-pyran-2-yl)oxy]-5α-androst-2-eno[3,2-c]pyrazole; [3,2-c]Pyrazole-5α-etioallocholane-17β-tetrahydropyranol; 17β-[(Tetrahydro-2H-pyran-2-yl)oxy]-2'H-5α-androst-2-eno[3,2-c]pyrazole; Pyrazolo[4',3':2,3]-5α-androstan-17β-ol 17β-tetrahydropyran ether
Routes of
administration
By mouth
Drug classAndrogen; Anabolic steroid; Androgen ether
Identifiers
  • (1S,3aS,3bR,5aS,10aS,10bS,12aS)-10a,12a-dimethyl-1-((tetrahydro-2H-pyran-2-yl)oxy)-1,2,3,3a,3b,4,5,5a,6,7,10,10a,10b,11,12,12a-hexadecahydrocyclopenta[5,6]naphtho[1,2-f]indazole
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC25H38N2O2
Molar mass398.591 g·mol−1
3D model (JSmol)
  • C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2OC4CCCCO4)CC[C@@H]5[C@@]3(CC6=C(C5)NN=C6)C
  (verify)

It is one of hundreds of drugs banned from the Olympics by the IOC. Russian marathon runner Lyubov Denisova was banned for two years from competition after testing positive for prostanozol and testosterone in 2007.

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