Chloroethynyl norgestrel

(8R,9S,10R,13S,14S,17S)-17-(Chloroethynyl)-13-ethyl-17-hydroxy-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one (non-preferred name)

2415-28-3

Chloroethynyl norgestrel

[Wiki]

(1S,2R,10R,11S,14S,15S)-14-(2-chloroethynyl)-15-ethyl-14-hydroxytetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-6-en-5-one

(8R,9S,10R,13S,14S,17S)-17-(2-chloroethynyl)-13-ethyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one