Dimepregnen

Dimepregnen (INN, BAN) (developmental code name ST-1411), or 6α,16α-dimethylpregn-4-en-3β-ol-20-one, is a pregnene steroid described as an antiestrogen that was synthesized in 1968 and was never marketed. It is similar in structure to the progestins and progesterone derivatives melengestrol and anagestone.