- Name:(8S,9S,13S,14S,17S)-17-(2-chloroethynyl)-13-methyl-7,8,9,11,12,14,15,1 6-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
- Cas:4567-67-3
- Formula:C20H23ClO2
- Synonyms:19-Nor-17a-pregna-1,3,5(10)-trien-20-yne-3,17-diol,21-chloro- (7CI,8CI); 17a-Chloroethynylestradiol; NSC 57429
- Name:Ethynerone
- Cas:3124-93-4
- Formula:C20H23ClO2
- Synonyms:19-Nor-17a-pregna-4,9-dien-20-yn-3-one,21-chloro-17-hydroxy- (7CI,8CI); 17a-Chloroethynyl-17-hydroxy-13b-methylgona-4,9-dien-3-one; 17a-Chloroethynyl-17b-hydroxy-19-nor-4,9-androstadien-3-one; 17a-Chloroethynyl-17b-hydroxy-4,9(10)-estradien-3-one; 17a-Chloroethynyl-17b-hydroxy-4,9-estradien-3-one; 17a-Chloroethynyl-19-nor-4,9(10)-D-androstadiene-17b-ol-3-one; 17a-Chloroethynyl-19-nor-androsta-4,9(10)-diene-17b-ol-3-one; 17a-Chloroethynyl-4,9-estradien-17b-ol-3-one;21-Chloro-17-hydroxy-19-nor-17a-pregna-4,9-dien-20-yn-3-one; Ethynerone; MK 665
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