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Estradiol benzoate was discovered in 1933 and was introduced for medical use that same year.It was the first estradiol ester to be discovered or marketed, and was one of the first estrogens to be used in medicine. Along with estradiol dipropionate, estradiol benzoate was among the most widely used esters of estradiol for many years following its introduction. However, in the 1950s, longer-acting estradiol esters that necessitated less frequent injections, such as estradiol valerate and estradiol cypionate, were developed, and have since largely superseded estradiol benzoate.Nonetheless, estradiol benzoate remains widely available throughout the world. It is not available for medical use in the United States, but is available in this country for use in veterinary medicine.
Estradiol Benzoate is a pro-drug ester of Estradiol, a naturally occurring hormone that circulates endogenously within the human body. Estradiol is the most potent form of all mammalian estrogenic steroids and acts as the major female sex hormone. As a pro-drug of estradiol, estradiol benzoate therefore has the same downstream effects within the body through binding to the Estrogen Receptor (ER) including ERα and ERβ subtypes, which are located in various tissues including in the breasts, uterus, ovaries, skin, prostate, bone, fat, and brain.
17beta-estradiol 3-benzoate is a benzoate ester resulting from the formal condensation of benzoic acid with the phenolic hydroxy group of 17beta-estradiol. It has a role as a xenoestrogen and an estrogen receptor agonist. It is a benzoate ester and a 17beta-hydroxy steroid. It derives from a 17beta-estradiol.
Estrogens direct the development of the female genotype in embryogenesis and at puberty. Estradiol is the major estrogen secreted by the premenopausal ovary. Estradiol benzoate is an estradiol analog which contains a benzyl ester at the C-
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