Wiktionary
proligestone
n. a steroidal progestin
Wikipedia
Proligestone
Proligestone ( INN, BAN) (brand names Corvinan, Delvosteron), also known as 14α,17α-propylidenedioxyprogesterone, is a steroidal progestin used in veterinary medicine in various countries, including Argentina, Czechoslovakia, France, and the Netherlands.