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CAS 108646-70-4

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ethinyl estriol

Description:
Ethinyl estriol is a synthetic estrogen, primarily used in hormone replacement therapy and contraceptive formulations. It is characterized by its ability to bind to estrogen receptors, thereby mimicking the effects of natural estrogens in the body. Ethinyl estriol is known for its high oral bioavailability due to the ethinyl group, which enhances its stability against metabolic degradation. This compound typically exhibits a strong affinity for estrogen receptors, leading to various physiological effects, including the regulation of the menstrual cycle and the maintenance of secondary sexual characteristics. Its chemical structure includes a phenolic hydroxyl group, contributing to its estrogenic activity. Ethinyl estriol is often utilized in combination with progestins in contraceptive pills, providing effective prevention of ovulation. Additionally, it may be employed in treating certain menopausal symptoms and conditions related to estrogen deficiency. However, like other hormonal therapies, it may have side effects and contraindications, necessitating careful consideration in clinical use.
Formula:C20H24O3
InChI:InChI=1/C20H24O3/c1-3-20(23)9-7-17-15-11-18(22)16-10-12(21)4-5-13(16)14(15)6-8-19(17,20)2/h1,4-5,10,14-15,17-18,21-23H,6-9,11H2,2H3/t14-,15-,17+,18?,19+,20?/m1/s1
Synonyms:
  • Ethinyl estriol
  • 19-Norpregna-1,3,5(10)-trien-20-yne-3,6,17-triol, (17alpha)-
  • 17-ethynylestra-1,3,5(10)-triene-3,6,17-triol
  • Ethynyl estriol
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