3-oxo-Delta(1) steroid

Any 3-oxo steroid that contains a double bond between positions 1 and 2.

ChEBI ID: 20156

Members (4)

Member	Definition	Role
1-testosterone	An anabolic steroid that differs from testosterone by having a 1,2-double bond instead of a 4,5-double bond in its A ring. A potent androgen with anabolic properties, it was legally sold as a prohormone in the U.S.A. until 2005, when it was reclassified as a Schedule III drug.	Delta(1)-dihydrotestosterone
1,4-androstadiene-3,17-dione	A steroid that consists of androstane having double bonds at positions 1 and 4 and two keto groups at positions 3 and 17.	androsta-1,4-diene-3,17-dione
1,5(10)-estradiene-3,4,17-trione	An o-quinone resulting from the formal oxidation of the dihydroxyphenyl moiety of 4-hydroxyestrone.	estra-1,5(10)-diene-3,4,17-trione
helvolic acid	A steroid C-21 acid having a 29-nordammarane skeleton substituted with an acetoxy group at C-16 and oxo groups at C-3 and -7, with double bonds at C-1, -17(20) and -24.	helvolic acid