Factory Supply Estrogen Powder Oestradiol 17-Heptanoate/Estradiol Enantate CAS 4956-37-0

Estradiol enantate  ( E2-EN  or  EEn ), also spelled  estradiol enanthate  and sold under the brand names  Perlutal  and  Topasel  among others, is an estrogen medication which is used in hormonal birth control for women. It is formulated in combination with dihydroxyprogesterone acetophenide (DHPA; algestone acetophenide), a progestin, and is used specifically as a combined injectable contraceptive. Estradiol enantate is not available for medical use alone. The medication, in combination with DHPA, is given by injection into muscle once a month.

Side effects of estradiol enantate include breast tenderness, breast enlargement, nausea, headache, and fluid retention. Estradiol enantate is a synthetic estrogen and hence is an agonist of the estrogen receptor, the biological target of estrogens like estradiol. It is an estrogen ester and a long-lasting prodrug of estradiol in the body. Because of this, it is considered to be a natural and bioidentical form of estrogen.

Estradiol enantate was first described by 1954, and was first studied in combination with DHPA as a combined injectable contraceptive in 1964.The combination was introduced for clinical use by the mid-1970s. Estradiol enantate is not available as a standalone medication (i.e., by itself without DHPA). The combination is available in Latin America and Hong Kong, and was also previously marketed in Spain and Portugal.

Estradiol enantate is used in combination with the progestin DHPA as a once-monthly combined injectable contraceptive for women in  Latin America  and  Hong Kong .  Estradiol enantate has been studied in  feminizing hormone therapy  for transgender women as well.  The combination of estradiol enantate and DHPA has likewise been used by transgender women for such purposes.