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Estrone is a natural estrogenic hormone that is a ketone with the chemical formula C18H22O2. It is primarily found in the body as a metabolite of estradiol and is secreted by the ovaries. Estrone is one of the three major estrogens, alongside estradiol and estriol, and plays a role in the development, maturation, and function of the female reproductive tract.12

Estrone can be used to treat conditions related to estrogen deficiency, such as menopausal symptoms and ovarian failure. It is derived from cholesterol and is synthesized through a series of steps involving progesterone and androgens. While estradiol is the most potent estrogen, estrone can be formed from estradiol and also has androstenedione as a precursor.132

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  1. estrone
  2. steroid hormone
  3. estrogen

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