Mifepristone - Wikipedia, the free encyclopedia
Mifepristone (or RU-486) is a synthetic, steroidal antiprogestogen and antiglucocorticoid drug. It is a 19-norsteroid with substitutions at positions C11 and C17 (17β-hydroxy-11β-(4-(dimethylamino)phenyl)-17α-(1-propynyl)estra-4,9-dien-3-one), which antag...