API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Telmisartan

EP Impurity A

4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazole EP-Impurity-A
Telmisartan

EP Impurity C

1,1-dimethylethyl 4¢-[[4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1Hbenzimidazol-1-yl]methyl]biphenyl-2-carboxylate EP-Impurity-C
Telmisartan

EP Impurity E

1-[(2¢-carboxybiphenyl-4-yl)methyl]-4-methyl-2-propyl-1H-benzimidazol-6-carboxylic acid EP-Impurity-E
Telmisartan

EP Impurity F

4¢-[[4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazol-1-yl]methyl]biphenyl-2-carboxamide EP-Impurity-F
Telmisartan

EP Impurity G

4¢-[[4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazol-1-yl]methyl]biphenyl-2-carbonitrile EP-Impurity-G
Telmisartan

EP Impurity H

1,1-dimethylethyl 4¢-(bromomethyl)biphenyl-2-carboxylate EP-Impurity-H