Telmisartan EP Impurity B

: Telmisartan USP Related Compound B ; Telmisartan Isomer; 4′-[[7-methyl-5-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazol-1-yl]methyl][1,1′-biphenyl]-2-carboxylic acid (as per EP) ; (4'-[(1,7'-Dimethyl-2'-propyl-1H,1'H-2,5'-bibenzo[d]imidazol-1'-yl)methyl]biphenyl-2-carboxylic acid) (as per USP)