Topterone (INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name) (developmental code name WIN-17665), also known as 17α-propyltestosterone (or simply propyltestosterone) or as 17α-propylandrost-4-en-17β-ol-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.
Topterone (INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name) (developmental code name WIN-17665), also known as 17α-propyltestosterone (or simply propyltestosterone) or as 17α-propylandrost-4-en-17β-ol-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.
Source: Wikipedia "Topterone" · CC BY-SA 4.0
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