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algestone

n. 16α,17α-dihydroxyprogesterone, a steroidal progestin used as a contraceptive drug.

Wikipedia
Algestone

Algestone ( INN) (brand names Alphasone, Alfasone), also known as 16α,17α-dihydroxyprogesterone, is a steroidal progestin used as a contraceptive drug.