|Synonyms||TZP-5258; 2-Oxachloromadinone; 17α-Hydroxy-6-chloro-2-oxa-6-dehydroprogesterone; 17α-Hydroxy-6-chloro-2-oxapregna-4,6-diene-3,20-dione|
|Chemical and physical data|
|Molar mass||364.866 g/mol|
|3D model (JSmol)|
Osaterone (developmental code name TZP-5258), also known as 17α-hydroxy-6-chloro-2-oxa-6-dehydroprogesterone, as well as 2-oxachloromadinone, is a steroidal antiandrogen and progestin that was never marketed. The C17α acetate ester of osaterone, osaterone acetate, in contrast, has been marketed.