<unk>  () (brand name Wei Ni An; developmental code name LY-49825), also known as<unk>  (, ), is a synthetic estrogen which was patented in 1971 and is marketed in China. It is the 3-cyclopentyl ether of ethinylestriol, and is also known as ethinylestriol cyclopentyl ether (EE3CPE).<unk>  is a prodrug of ethinylestriol, and is a more potent estrogen in comparison. It is described as a slowly-metabolized, long-acting estrogen and derivative of estriol.<unk>  was assessed in combination with levonorgestrel for the potential treatment of postmenopausal osteoporosis, but this formulation ultimately was not marketed.
Nilestriol
Methandriol propionate
Estriol tripropionate
Estriol succinate
Cloxotestosterone acetate
Estradiol enantate
Estradiol undecylate
Estradiol dienantate