esomeprazole magnesium trihydrate and its Impurities

Esomeprazole Magnesium Trihydrate is a proton pump inhibitor medication. It is used for the management of gastroesophageal reflux disease for gastric protection to prevent recurrence of stomach ulcers or gastric damage from chronic use of NSAIDs, and for the treatment of pathological hypersecretory conditions including Zollinger-Ellison Syndrome. It is sold under the brand name Nexium.. Reference standards of Esomeprazole Magnesium Trihydrate API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below