Stenbolone acetate () (brand name Stenobolone, Anatrofin; former developmental code names RS-2106, S-3760), also known as 2-methyl-4,5ñ-dihydro-ô<sup>1</sup>-testosterone 17ò-acetate (2-methyl-ô<sup>1</sup>-DHT 17ò-acetate) or as 2-methyl-5ñ-androst-1-en-17ò-ol-3-one 17ò-acetate, is a synthetic, injected anabolicâÂÂandrogenic steroid (AAS) and derivative of dihydrotestosterone (DHT) which has been marketed in Spain.
It is the C17ò acetate ester of stenbolone, which is structurally related to 1-testosterone (ÃÂ<sup>1</sup>-DHT; dihydroboldenone) and to drostanolone (2ñ-methyl-DHT).