Omeprazole EP Impurity H

: 4-Desmethoxy-4-chloro Omeprazole; Omeprazole BP Impurity H; 2-[[(4-Chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole; 2-[(RS)-[(4-chloro-3,5-dimethylpyridin-2yl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole;