Methandriol diacetate, or methylandrostenediol diacetate, also known as 17ñ-methylandrost-5-ene-3ò,17ò-diol 3ò,17ò-diacetate, is a synthetic, injected anabolicâÂÂandrogenic steroid (AAS) and a 17ñ-alkylated derivative of 5-androstenediol that was never marketed. It is an androgen ester â specifically, the C3,17ò diacetate ester of methandriol (17ñ-methyl-5-androstenediol) â and acts as a prodrug of methandriol in the body.