N-Methyl pantoprazole

n-methyl pantoprazole, mixture of 1 and 3 isomers ; pantoprazole ep impurity f ; pantoprazole ep impurity d ; 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl]sulfinyl]-1-methyl -1h-benzimidazole ; 5-(difluoromethoxy)-2-(((3,4-dimethoxypyridin-2-yl)methyl)sulfinyl)-1-methyl-1h-benzo[d]imidazole ; n-methyl pantoprazole ; pantoprazole related compounds d and f mixture ; pantoprazole related compounds d and f mixture (20 mg) ; 6-(difluoromethoxy)-2-(((3,4-dimethoxypyridin-2-yl)methyl)sulfinyl)-1-methyl-1h-benzo[d]imidazole