2-[[(4-Chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole|2-[[ethyl]sulfinyl]-5-methoxy-1H-benzimidazole|4-Desmethoxy-4-chloro Omeprazole ;|5-Methoxy-2-[[(4-Chloro-3,5-dimethyl-pyridine-2-yl)methyl]sulfinyl]-1H-benzimidazole|Omeprazole BP Impurity H ; 4-Desmethoxy-4-chloro Omeprazole ; 2-[[(4-Chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole ;