<unk> , also known as 5α-androstan-17β-ol-3-one or as 5α-dihydrotestosterone (5α-DHT), is a naturally occurring androstane steroid with a ketone group at the C3 position and a hydroxyl group at the C17β position. It is the derivative of testosterone in which the double bond between the C4 and C5 positions has been reduced or hydrogenated. Esters Several C17β ester prodrugs of<unk> , including<unk>  benzoate,<unk>  enanthate,<unk>  propionate, and<unk>  valerate, have been developed and introduced for medical use as AAS. Conversely, dihydrotestosterone acetate, dihydrotestosterone butyrate, and dihydrotestosterone formate have been developed but have not been marketed. Derivatives Synthetic derivatives of<unk>  (DHT) that have been developed as AAS include: ; Non-17α-alkylated derivatives * Marketed * Bolazine (an azine dimer prodrug of drostanolone) * Drostanolone (2α-methyl-DHT) * Epitiostanol (2α,3α-epithio-DHT) * Mepitiostane (a 17-ether prodrug of epitiostanol) * Mesterolone (1α-methyl-DHT) * Metenolone (1-methyl-δ1-DHT) * Stenbolone (2-methyl-δ1-DHT) * Never marketed * 1-Testosterone (dihydroboldenone; δ1-DHT) * Mesabolone (a 17-ether prodrug of δ1-DHT) * Prostanozol (a 17-ether prodrug of 17α-demethylstanozolol) ; 17α-Alkylated derivatives * Marketed * Androisoxazole (a 2,3-isoxazole A ring-fused derivative of 17α-methyl-DHT) * Furazabol (a 2,3-furan A ring-fused derivative of 17α-methyl-DHT) * Mebolazine (an azine dimer prodrug of methasterone) * Mestanolone (17α-methyl-DHT) * Oxandrolone (2-oxa-17α-methyl-DHT) * Oxymetholone (2-hydroxymethylene-17α-methyl-DHT) * Stanozolol (a 2,3-pyrazole A ring-fused derivative of 17α-methyl-DHT) * Never marketed * Desoxymethyltestosterone (3-deketo-17α-methyl-δ2-DHT) * Methasterone (2α,17α-dimethyl-DHT) * Methyl-1-testosterone (methyldihydroboldenone; 17α-methyl-δ1-DHT) * Methylepitiostanol (2α,3α-epithio-17α-methyl-DHT) * Methylstenbolone (2,17α-dimethyl-δ1-DHT)
Androstanolone
Cloxotestosterone acetate
Norethandrolone
Drostanolone propionate
Oxandrolone
Testosterone undecylenate
Testosterone cypionate
Nandrolone propionate