Synonyms: 1-(5-Methoxy-1H-benzo[d]iMidazol-2-yl)-3,5-diMethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid, aMMonia salt;EsoMeprazole related substance H431/41;1,4-Dihydro-1-(5-Methoxy-1H-benziMidazol-2-yl)-3,5-diMethyl-4-oxo-2-Pyridinecarboxylic Acid;1,4-Dihydro-1-(6-methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-2-pyridinecarboxylic acid;1-(6-Methoxy-1H-benzo[d]iMidazol-2-yl)-3,5-diMethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid;1-(5-Methoxy-1H-benzo[d]iMidazol-2-yl)-3,5-diMethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid