<unk> , also known as androst-5-en-3β-ol-17-one, is a naturally occurring androstane steroid and a 17-ketosteroid. It is closely related structurally to androstenediol (androst-5-ene-3β,17β-diol), androstenedione (androst-4-ene-3,17-dione), and testosterone (androst-4-en-17β-ol-3-one).<unk>  is the δ5 (5(6)-dehydrogenated) analogue of epiandrosterone (5α-androstan-3β-ol-17-one), and is also known as 5-dehydroepiandrosterone (5-DHEA) or δ5-epiandrosterone. A positional isomer of<unk>  which may have similar biological activity is 4-dehydroepiandrosterone (4-DHEA). Derivatives<unk>  is used medically as the C3β esters<unk>  enanthate and<unk>  sulfate. The C19 demethyl analogue of<unk>  is 19-nordehydroepiandrosterone (19-nor-DHEA), which is a prohormone of nandrolone (19-nortestosterone). The 5α-reduced and δ1 (1(2)-dehydrogenated) analogue of<unk>  is 1-dehydroepiandrosterone (1-DHEA or 1-androsterone), which is a prohormone of 1-testosterone (δ1-DHT or dihydroboldenone). Fluasterone (3β-dehydroxy-16α-fluoro-DHEA) is a derivative of<unk>  with minimal or no hormonal activity but other biological activities preserved.
Prasterone
Chlordecone
Enoximone
Dipipanone
Azacyclonol
Methasterone
Iomeprol
Crotamiton