Synonyms: Telmisartan Imp. B (EP), Telmisartan USP Related Compound B, Telmisartan USP RC B, 4′-[(1,7′-Dimethyl-2′-propyl[2,5′-bi-1H-benzimidazol]-1′-yl)methyl][1,1′-biphenyl]-2-carboxylic acid, 4′-[(1,7′-dimethyl-2′-propyl-1H,1’H-2,5′-bibenzo[d]imidazol-1′-yl)methyl]biphenyl-2-carboxylic acid, Telmisartan RC B (USP), Telmisartan Related Compound B, Telmisartan Impurity B