Wiktionary
topterone
n. An antiandrogen drug.
Wikipedia
Topterone
Topterone ( INN, USAN) (developmental code name WIN-17665), also known as 17α-propyltestosterone or 17β-hydroxy-17α-propylandrost-4-en-3-one, is a steroidal antiandrogen that was first reported in 1978 and was developed for topical administration but, due to poor effectiveness, was never marketed.