What is 17ß-Ethynyl-3,17a-estradiol (CAS 4717-38-8)?
An impurity of Estradiol.
Ethinyl estradiol is the synthetic form of the endogenous estrogen, estradiol, widely used in combination with progestins in birth control pills (oral contraceptives).
This compound exhibits strong estrogenic properties and is involved in various medical applications beyond contraception, including treatment of menopausal symptoms, gynecological disorders, and certain hormone-sensitive cancers.
Ethinyl estradiol is known for its bioavailability when taken orally and its resistance to metabolism compared to natural estrogens like estradiol.
The compound's pharmacokinetic profile includes high binding to serum albumin and metabolism through glucuronidation, sulfation, and hydroxylation, followed by elimination mostly via urine and bile.
Product Documents
COA (Certificate of Analysis)
SDS (Safety Data Sheet)