<unk> , also known as estra-1,3,5(10)-trien-3-ol-17-one, is a naturally occurring<unk>  steroid with double bonds at the C1, C3, and C5 positions, a hydroxyl group at the C3 position, and a ketone group at the C17 position. The name<unk>  was derived from the chemical terms estrin (estra-1,3,5(10)-triene) and ketone. The chemical formula of<unk>  is C18H22O2 and its molecular weight is 270.366 g/mol. It is a white, odorless, solid crystalline powder, with a melting point of 254.5 °C (490 °F) and a specific gravity of 1.23.<unk>  is combustible at high temperatures, with the products carbon monoxide (CO) and carbon dioxide (CO2).
Estrone
Methyltestosterone
Allyltestosterone
Androgen
Estradiol 
Estradiol
Dihydrotestosterone
2-Hydroxyestradiol