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

It represents a dihydro-derivative that helps monitor process efficiency, particularly in the reduction or oxidation steps related to the 7-position indole modification. 2,3-Dihydro-1-(3-hydroxypropyl)-5-[(2R)-2-[[2-[2-(2, 2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-1H-indole-7-carbonitrile is used mainly as a key impurity reference standard (Silodosin Nitrile Impurity) in the pharmaceutical industry for the synthesis and quality control of Silodosin.