Estradiol enanthate (INN, USAN), or estradiol enantate, is a synthetic ester, specifically the 17-heptanoyl ester, of the natural estrogen, estradiol.It is marketed under the brand names Anafertin, Deladroxate, Perlutan, and Topasel, which are combination formulations of estradiol enanthate and dihydroxyprogesterone acetophenide, as a once-monthly injectable hormonal contraceptive in Spain and Latin America, and has been used as such since at least the mid-1960s.

It is a kind of estrogen, can promote and regulate the normal development of women's genitals and secondary. Can cause hyperplasia of mammary gland carcinoma development, but in larger doses, can inhibit pituitary prolactin release, and reduce the secretion of milk. Potent mammalian estrogenic hormone produced by the ovary.