Desogestrel

13-Ethyl-11-methylene-18,19-dinor-17 alpha-pregn-4-en-20-yn-17-ol; Cerazette; Marvelon; Org-2969; Organon Brand of Desogestrel; 13 Ethyl 11 methylene 18,19 dinor 17 alpha pregn 4 en 20 yn 17 ol; Org 2969; Org2969
A synthetic progestational hormone used often as the progestogenic component of combined oral contraceptive agents.