Progesterone 3-oxime
Progesterone 3-oxime, also known as 3-pregn-4-en-3-one, is a progesterone derivative which was never marketed. It is a progestogen oxime – specifically, the C3 oxime of the progestogen progesterone. Progesterone C3 and C20 oxime conjugates, like progesterone 3-(O-carboxymethyl)oxime, have been found to be water-soluble prodrugs of progesterone and pregnane neurosteroids.