Mifepristone; (8S,11R,13S,14S,17S)-11-(4-(dimethylamino)phenyl)-17-hydroxy-13-methyl-17-(prop-1-yn-1-yl)-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one; CAS No.: 84371-65-3; (8S,11R,13S,14S,17S)-11-(4-(dimethylamino)phenyl)-17-hydroxy-13-methyl-17-(prop-1-yn-1-yl)-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one (CAS 84371-65-3) exemplifies ChemShuttle s custom synthesis services for steroidal alkynes. This ethynyl-steroid (CAS 84371-65-3) is tailored via custom synthesis services for hormone receptor modulation. As a CRO chemical synthesis provider, ChemShuttle ensures CAS 84371-65-3 s binding affinity for AR/ER studies.