<unk> , also known as 1α,2α-methylene-6-chloro-17α-acetoxy-δ6-progesterone or as 1α,2α-methylene-6-chloro-17α-hydroxypregna-4,6-diene-3,20-dione acetate, is a synthetic pregnane steroid and an acetylated derivative of 17α-hydroxyprogesterone. It is structurally related to other 17α-hydroxyprogesterone derivatives such as chlormadinone acetate, hydroxyprogesterone<unk> proate, medroxyprogesterone acetate, and megestrol acetate. Synthesis Chemical syntheses of<unk>  have been published. The following is one such synthesis: Partial synthesis of<unk> , using hydroxyprogesterone acetate as a starting material, by Wiechert & Neumann (1965) and Wiechert (1966).
Cyproterone acetate
Desoxymethyltestosterone
15β-Hydroxycyproterone acetate
Oxandrolone
Acetothiolutamide
Goserelin
Darolutamide
Bisoctrizole