Norethisterone acetate oxime

Norethisterone acetate oxime (developmental code names ORF-5263, So-36), or norethindrone acetate oxime, is a steroidal progestin of the 19-nortestosterone group which was developed as a postcoital contraceptive but was never marketed. It is the C3 oxime and C17β-acetate ester of norethisterone.