<unk>  (INN; CS-891) is a dual inhibitor of both isoforms of the enzyme 5α-reductase. It was under investigation for the treatment of benign prostatic hyperplasia (BPH) and androgenic alopecia, but was never marketed.
Lapisteride
Gestodene
Progabide
Segesterone acetate
Epristeride
Protollin
Tiomesterone
Nafarelin