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Alternate Names: Nexium IV, H199/18 sodium
CAS No: 161796-78-7
PubChem CID: 23674541
Mol Formula: C17H18N3NaO3S
Mol Weight: 367.4 g/mol
IUPAC Name: sodium;5-methoxy-2-[(S)-(4-methoxy-3,5-dimethylpyridin-2-yl)methylsulfinyl]benzimidazol-1-ide
API Description: Esomeprazole Sodium is the sodium salt of the S-isomer of omeprazole, with gastric proton pump inhibitor activity. In the acidic compartment of parietal cells, esomeprazole is protonated and converted into the active achiral sulfenamide; the active sulfenamide forms one or more covalent disulfide bonds with the proton pump hydrogen-potassium adenosine triphosphatase (H+/K+ ATPase), thereby inhibiting its activity and the parietal cell secretion of H+ ions into the gastric lumen, the final step in gastric acid production. H+/K+ ATPase is an integral membrane protein of the gastric parietal cell.
