Methandriol bisenanthoyl acetate (brand name Notandron-Depot), or methylandrostenediol bisenanthoyl acetate, also known as 17ñ-methylandrost-5-ene-3ò,17ò-diol 3ò,17ò-di(3-oxononanoate), is a synthetic, injected anabolicâÂÂandrogenic steroid (AAS) and a 17ñ-alkylated derivative of 5-androstenediol. It is an androgen esterâÂÂspecifically, the C3ò,17ò di(3-oxononanoate) (or dienanthoylacetate) ester of methandriol (17ñ-methyl-5-androstenediol)âÂÂand acts as a prodrug of methandriol in the body. Methandriol bisenanthoyl acetate is administered by intramuscular injection and, relative to methandriol, has an extended duration via this route due to a depot effect afforded by its ester.