Chemical Name: (11β,17β)-11-(4-Aminophenyl)-17-hydroxy-17-(1-propyn-1-yl)-estra-4,9-dien-3-one; RU 42848; Didesmethyl Mifepristone;
Synonym: (5Z,7E,22E,24S)-24-cyclopropyl-1a,3b-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-9,10-secochola-5,7,10(19),22-tetraen-24-ol,