3,4-Dimethoxy-2-methylpyridine-N-oxide can be used forone pot synthesis of 2-[2-(pyridylmethyl)thio]-1H-benzimidazoles, which are intermediates for preparing H+/K+-ATPase inhibitors. 3,4-Dimethoxy-2-methylpyridine-N-oxide is an impurity of Pantoprazole (P183000).