Rabeprazole Related Compound F (15 mg) (2-{[(4-Chloro-3-methyl-2-pyridyl)methyl]sulfinyl}benzimidazole);Lansoprazole impurity F;Rabeprazole EP Impurity H;Lansoprazole EP IMpurity F;Rabeprazole Related CoMpound F;2-[[(4-CHLORO-3-METHYL-PYRIDIN-2-YL)METHYL]SULFINYL]-1H-BENZO[D]IMIDAZOLE;4-chloro Lansoprazole;2-[[(4-Chloro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole