Oxabolone cipionate (, ) (brand names Steranabol Depo, Steranabol Ritardo; former developmental code name FI-5852), or oxabolone cypionate, also known as 4-hydroxy-19-nortestosterone 17ò-cypionate or estr-4-en-4,17ò-diol-3-one 17ò-cypionate, is synthetic and injected anabolicâÂÂandrogenic steroid (AAS) and derivative of nandrolone (19-nortestosterone) which has been marketed in Europe. It is the C17ò cypionate ester and a prodrug of oxabolone (4-hydroxy-19-nortestosterone).