17alpha Methyltestosterone Description Methyltestosterone Synonyms: METANDREN; 17-Methyltestosterone,17a Methyltestosterone CAS: 58-18-4 M.F.: C20H30O2 M.W.: 302.45 EINECS No.: 200-366-3 Assay: 99.1% Methyltestosterone was first synthesized in 1935, and was the first 17α-alkylated AAS to be synthesized. Methyltestosterone (brand names Android, Androral, Metandren, Oraviron, Testred, Virilon), also known as 17α-methyltestosterone or as 17α-methylandrost-4-en-17β-ol-3-one, is a synthetic, orally active androgenic-anabolic steroid (AAS) and 17α-methylated …