Wiktionary
quingestanol
n. A particular progestogen.
Wikipedia
Quingestanol
Quingestanol ( INN, BAN), also known as 3-cyclopentyl norethisterone, is a steroidal progestin which was never marketed. An acylated derivative, quingestanol acetate, is used as a pharmaceutical drug.
While quingestanol is sometimes used as a synonym for quingestanol acetate, what is almost always being referred to is actually quingestanol acetate and not quingestanol.