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Concept
Etynodiol diacetate
Summary
Etynodiol diacetate, or ethynodiol diacetate, sold under the brand names Demulen and Femulen among others, is a progestin medication which is used in birth control pills. The medication is available only in combination with an estrogen. It is taken by mouth.
Etynodiol diacetate is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. It has weak androgenic and estrogenic activity and no other important hormonal activity. The medication is a prodrug of norethisterone in the body, with etynodiol occurring as an intermediate.
Etynodiol, a related compound, was discovered in 1954, and etynodiol diacetate was introduced for medical use in 1965. The medication remains available today only in the United States, Canada, and a few other countries.
Etynodiol diacetate is used in combination with an estrogen such as ethinylestradiol or mestranol in combined oral contraceptives for women.
Norethisterone#Side effects and Progestin#Side effects
Etynodiol diacetate is virtually inactive in terms of affinity for the progesterone and androgen receptors and acts as a rapidly converted prodrug of norethisterone, with etynodiol occurring as an intermediate. Upon oral administration and during first-pass metabolism in the liver, etynodiol diacetate is rapidly converted by esterases into etynodiol, which is followed by oxygenation of the C3 hydroxyl group to produce norethisterone. In addition to its progestogenic activity, etynodiol diacetate has weak androgenic activity, and, unlike most progestins but similarly to norethisterone and noretynodrel, also has some estrogenic activity.
The pharmacokinetics of etynodiol diacetate have been reviewed.
List of progestogensProgestogen ester and List of progestogen esters
Etynodiol diacetate, also known as 3β-hydroxy-17α-ethynyl-19-nortestosterone 3β,17β-diaceate, 3β-hydroxynorethisterone 3β,17β-diacetate, or 17α-ethynylestr-4-ene-3β,17β-diol 3β,17β-diacetate, is a synthetic estrane steroid and a derivative of testosterone.
Official source
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