2-Chloromethyl-3,4-dimethoxypyridinium chloride Pantoprazole Impurity 1 PANTOPRAZOLE N-OXIDE Pantoprazole EP IMpurity E N-[(3,4-DiMethoxy-2-pyridinyl)Methyl] Pantoprazole Pantoprazole Impurity 11 N-Methyl Pantoprazole, mixture of 1 and 3 isomers N-[(3,4-DiMethoxy-2-pyridinyl)Methyl] Pantoprazole Sulfide PANTOPRAZOLE SULFONE N-OXIDE Pantoprazole Magnesium 4-Difluoromethoxy-2-nitro-aniline Pantoprazole Impurity 5 Pantoprazole EP Impurity F N-[4-(difluoromethoxy)-2-nitrophenyl]acetamide Pantoprazole Impurity 12 Pantoprazole Sulfide Dimer Pantoprazole Impurity 2 Pantoprazole Impurity G