Candesartan Cilexetil for system suitability CRS

Candesartan Cilexetil (2-Ethoxy-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-benzimidazole-7-carboxylic Acid 1-[[(Cyclohexyloxy)carbonyl]oxy]ethyl Ester), Candesartan Cilexetil Related Compound - A (2-Ethoxy-1-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H benzimidazole-7-carboxylic Acid Ethyl Ester), Candesartan Cilexetil Related Compound - B (1-(((Cyclohexyloxy)carbonyl)oxy)ethyl 3-((2'-(1H-tetrazol-5-yl)- [1,1'-biphenyl]-4-yl)methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate), Candesartan Cilexetil Related Compound - F (1-(((Cyclohexyloxy)carbonyl)oxy)ethyl 2-ethoxy-1-((2'-(2-ethyl-2H-
tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate)