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| Trade names | Dostalon, Roxilon |
| Other names | Dimethazine; Dymethazine; Dimethasterone azine; Di(methasterone) azine; 2α,17α-Dimethyl-5α-androstan-17β-ol-3-one azine |
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| Chemical and physical data | |
| Formula | C42H68N2O2 |
| Molar mass | 633.018 g·mol−1 |
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Mebolazine (INNTooltip International Nonproprietary Name; brand namesDostalon andRoxilon; also known asdimethazine,dymethazine,di(methasterone) azine, or2α,17α-dimethyl-5α-androstan-17β-ol-3-one azine) is asynthetic,orally activeandrogen/anabolic steroid (AAS) and a17α-alkylatedderivative ofdihydrotestosterone (DHT) which is no longer marketed.[1][2] It has a unique and unusualchemical structure, being adimer ofmethasterone linked at the 3-position of the A-ring by anazinegroup, and reportedly acts as aprodrug of methasterone.[3]
Since 2008, mebolazine has been used illegally as an ingredient is some dietary supplements,[4] includingvitamin B supplements, and in the United States theFood and Drug Administration has taken legal action against such manufacturers.[5][6]