Synonyms: Omeprazole Imp. D (EP),Esomeprazole Magnesium Trihydrate Imp. D (EP), Esomeprazole Imp. D (EP), Omeprazole USP Related Compound A, Omeprazole USP RC A, 5-Methoxy-2-[[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulphonyl]-1H-benzimidazole, Omeprazole Sulphone, Omeprazole Related Compound A, Esomeprazole Magnesium Trihydrate Impurity D, Esomeprazole Sodium Impurity D, Omeprazole Impurity D, Esomeprazole Impurity D, Esomeprazole Impurity D