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| Other names | Chloromethyltestosterone; CMT; 4-Chloro-17α-methyltestosterone; 4-Chloro-17α-methylandrost-4-en-17β-ol-3-one |
| Routes of administration | Oral |
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| Formula | C20H29ClO2 |
| Molar mass | 336.90 g·mol−1 |
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Methylclostebol, also known as4-chloro-17α-methyltestosterone or as4-chloro-17α-methylandrost-4-en-17β-ol-3-one, is asynthetic,orally activeanabolic-androgenic steroid (AAS) anddesigner steroid that has been sold on the Internet as a "dietary supplement",[1][2] but it has never been studied for medical use.[3] It is the 17α-alkylated variant ofclostebol (4-chlorotestosterone).[4]
Rahnema, Crosnoe, and Kim (2015) reported that German athletes used methylclostebol as aperformance enhancing drug in the 1960s and 1970s, but this has not been substantiated.[3] The compound is listed as a banned anabolic agent by theWorld Anti-Doping Agency.[5]
