This article is about a non-clinically used antiandrogen compound. For the pharmaceutical drug, see osaterone acetate.
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
CAS Number 105149-04-0
PubChem (CID) 3047806
Chemical and physical data
Formula C20H25ClO4
Molar mass 364.866 g/mol
3D model (Jmol) Interactive image

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.[1] The C17α acetate ester of osaterone, osaterone acetate, in contrast, has been marketed.[1]

See also


  1. 1 2 Index Nominum: International Drug Directory. MedPharm. 2011. ISBN 978-3-8047-5053-1.

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