517-07-7

Hexahydroequilenin is a derivative of Equilenin (E592400). Equilenin is an an equine estrogen sex hormone that is found naturally in pregnant mares’ urine. Equilenin, along with a couple of other equine hormones, are major components of a medication called Premarin, which is used to treat dysfunctional uterine bleeding in women.