Rabeprazole EP Impurity E;Rabeprazole 4-Methoxy Impurity ; 4-Desmethoxypropoxyl-4-Methoxy Rabeprazole

Rabeprazole EP Impurity E;Rabeprazole 4-Methoxy Impurity ; 4-Desmethoxypropoxyl-4-Methoxy Rabeprazole

2-{[(4-methoxy-3-methylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole

Impurity reference standard used for related substances testing of Rabeprazole drug substance and drug product per pharmacopoeial limits.