Etynodiol

Etynodiol, or ethynodiol, is a steroidal progestin of the 19-nortestosterone group which was never marketed.

[1][2][3] A diacylated derivative, etynodiol diacetate, is used as a hormonal contraceptive.

Whereas norethisterone has a ketone at C3 and lynestrenol has no substituent at C3, etynodiol has a hydroxyl group at the position.

Etynodiol is the generic name of the drug and its INNTooltip International Nonproprietary Name, while ethynodiol is its BANTooltip British Approved Name.

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Ethynodiol diacetate synthesis: [ 9 ] F. B. Colton, U.S. patent 2,843,609 (1958 to Searle ). Prepn of the 3-acetate, 17-acetate, and diacetate: P. D. Klimstra, U.S. patent 3,176,013 (1965 to Searle); see also: [ 10 ]