SPL Set ID: f3d4a0d7-77fd-496e-8dfa-2b2dbace4bac

The active ingredient in esomeprazole magnesium delayed-release capsules for oral administration is bis (5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl) methyl] sulfinyl] benzimidazole, magnesium salt dihydrate a PPI. Esomeprazole is the S-isomer of omeprazole, which is a mixture of the S-and R-isomers. (Initial U.S. approval of esomeprazole magnesium: 2001). Its molecular formula is (C 17 H 18 N 3 O 3 S) 2 Mg x 2 H 2 O with molecular weight of 749.15 as a dihydrate and 713.1 on an anhydrous basis. The structural formula is: The magnesium salt is a white to slightly colored crystalline powder. It contains 2 moles of water of solvation and is slightly soluble in water. The stability of esomeprazole magnesium is a function of pH; it rapidly degrades in acidic media, but it has acceptable stability under alkaline conditions. At pH 6.8 (buffer), the half-life of the magnesium salt is about 19 hours at 25°C and about 8 hours at 37°C. Esomeprazole magnesium is supplied as Esmoprazole magnesium delayed-release capsules. Each Esomeprazole magnesium delayed-release capsule contains 20 mg of esomeprazole (equivalent to 21.75 mg esomeprazole magnesium dihydrate) or 40 mg of esomeprazole (equivalent to 43.50 mg esomeprazole magnesium dihydrate) in the form of enteric-coated granules with the following inactive ingredients: Colloidal silicon dioxide, hypromellose, isopropyl alcohol, magnesium stearate, meglumine, methacrylic acid copolymer dispersion, methyl alcohol, methylene chloride, mono & diglycerides, poloxamer, Talc, triethyl citrate, and Sugar spheres (composed of sucrose, maize starch and purified water). The capsule shells have the following inactive ingredients: FD & C Blue 1, FD & C Red 40, gelatin, sodium lauryl sulphate and titanium dioxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, propylene glycol, Shellac, strong ammonia solution, and yellow iron oxide. Esomeprazole-structure