<unk>  (, ) (brand names Ortho<unk> ,<unk> ,<unk>  Ortho, Sexadien,<unk> in, Dienol, Dinovex, Follormon, Oestrodiene, Synestrol, numerous others), also known as<unk>  (), is a synthetic nonsteroidal estrogen of the stilbestrol group which is or was used to treat menopausal symptoms in the United States and Europe. It has been studied for use by rectal administration in the treatment of prostate cancer in men as well. The medication was introduced in the U.S. in 1947 by Schering as Synestrol and in France in 1948 as Cycladiene.<unk>  is a close analogue of diethylstilbestrol. It has approximately 223% and 404% of the affinity of estradiol at the ERα and ERβ, respectively.<unk>  diacetate (brand names Faragynol, Gynocyrol, others) also exists and has been used medically.
Dienestrol
Gestodene
Hexestrol
Fosfestrol
Dimestrol
Allenestrol
Benzestrol
Moxestrol