Silodosin Standard

2,3-Dihydro-1-(3-hydroxypropyl)-5-[(2R)-2-[[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-1H-indole-7-carboxamide;(R)-1-(3-Hydroxypropyl)-5-[2-[[2-[2-(2,2,2- trifluoroethoxy)phenoxy]ethyl]amino]propyl]indoline-7-carboxamide;