<unk>  is a synthetic pregnane steroid and a derivative of progesterone and 17α-hydroxyprogesterone. Specifically, it is the 17α-acetate ester of<unk>  or the 6α-methylated analogue of hydroxyprogesterone<unk> .<unk>  is known chemically as 6α-methyl-17α-acetoxyprogesterone or as 6α-methyl-17α-acetoxypregn-4-ene-3,20-dione, and its generic name is a contraction of 6α-methyl-17α-hydroxyprogesterone<unk> .<unk>  is closely related to other 17α-hydroxyprogesterone derivatives such as chlormadinone<unk> , cyproterone<unk> , and megestrol<unk> , as well as to medrogestone and nomegestrol<unk> . 9α-fluoromedroxyprogesterone<unk>  (FMPA), the C9α fluoro analogue of<unk>  and an angiogenesis inhibitor with two orders of magnitude greater potency in comparison to<unk> , was investigated for the potential treatment of cancers but was never marketed.
Medroxyprogesterone acetate
Hydroxyprogesterone acetate
Desoxymethyltestosterone
Retroprogesterone
Gestodene
Lipoidal estradiol
Hydroxyprogesterone caproate
Cloxestradiol acetate