Hexestrol

Synthetic nonsteroidal estrogen

Chemical structure of Hexestrol

Hexestrol is a synthetic nonsteroidal estrogen of the stilbestrol group, which was developed in the 1930s. It is closely related to diethylstilbestrol (DES) and has been used in the past for various medical purposes, including hormone replacement therapy and the treatment of prostate cancer.

Chemical Properties

Hexestrol is a stilbene derivative and is structurally similar to diethylstilbestrol. It is a white crystalline powder that is insoluble in water but soluble in organic solvents. The chemical formula of hexestrol is C18H22O2, and it has a molecular weight of 270.37 g/mol.

Pharmacology

Hexestrol acts as an agonist of the estrogen receptor, mimicking the effects of natural estrogens in the body. It binds to estrogen receptors in various tissues, leading to estrogenic effects such as the stimulation of breast tissue growth and the regulation of the menstrual cycle.

Medical Uses

Historically, hexestrol was used in hormone replacement therapy for menopausal symptoms and in the treatment of prostate cancer. It was also used to suppress lactation and to treat breast cancer in postmenopausal women. However, due to concerns about its safety and the development of newer, safer estrogens, its use has declined significantly.

Safety and Side Effects

The use of hexestrol, like other synthetic estrogens, has been associated with an increased risk of thromboembolic events, endometrial cancer, and other estrogen-related side effects. Its use is contraindicated in patients with a history of estrogen-dependent tumors, thromboembolic disorders, and liver disease.

Veterinary Use

Hexestrol has been used in veterinary medicine, particularly in the past, to promote growth in livestock. However, due to concerns about residues in meat and potential health risks to humans, its use in food-producing animals has been banned in many countries.

Distribution of hexestrol radioactivity after a subcutaneous injection of tritiated hexestrol in oil solution in female goats

Regulation

Due to its potential health risks, the use of hexestrol has been restricted or banned in many countries. It is no longer widely used in human medicine and is subject to strict regulations in veterinary applications.

Related Pages

• Diethylstilbestrol
• Estrogen
• Hormone replacement therapy
• Prostate cancer