Nisterime (), also known as 2ñ-chloro-4,5ñ-dihydrotestosterone 3-O-(p-nitrophenyl)oxime or as 2ñ-chloro-5ñ-androstan-17ò-ol-3-one 3-O-(p-nitrophenyl)oxime, is a synthetic anabolic-androgenic steroid (AAS) and a derivative of dihydrotestosterone (DHT) that was never marketed. The C17ñ acetate ester of nisterime, nisterime acetate (ORF-9326), also exists and was developed as a postcoital contraceptive but was similarly never marketed.