Not Less Than - 95%
1-[4-[4-(2,3-Dichlorophenyl)piperazin-1-yl]butyl-7-OH Carbostyril; 1-(4-(4-(2,3-Dichlorophenyl)piperazin-1-yl)butyl)-7-hydroxy-3,4-dihydroquinolin-2(1H)-one