<unk> , also known as norethisterone 17β-acetate 3-cyclopentyl enol ether or as 17α-ethynyl-19-nortestosterone 17β-acetate 3-cyclopentyl enol ether (ENTACP), as well as 3-(cyclopentyloxy)-17α-ethynylestra-3,5-dien-17β-yl acetate, is a synthetic estrane steroid and a derivative of testosterone. It is specifically a derivative of 19-nortestosterone and 17α-ethynyltestosterone, or of norethisterone (17α-ethynyl-19-nortestosterone), in which a cyclopentyl enol ether group has been attached at the C3 position and an acetate ester has been attached at the C17β position.<unk>  is the C17β acetate ester of<unk>  (norethisterone 3-cyclopentyl enol ether).
Quingestanol acetate
Ingenol mebutate
Hexestrol dipropionate
Nandrolone decanoate
Dienestrol diacetate
Gestodene
Hexestrol diacetate
Nandrolone propionate