SPL Set ID: e87d2206-9c06-438c-947b-10b29a879d7b

The active ingredient in omeprazole delayed-release capsule, USP is a substituted benzimidazole, 5-methoxy-2-[[(4-methoxy-3, 5-dimethyl-2-pyridinyl) methyl] sulfinyl]-1 H -benzimidazole, a compound that inhibits gastric acid secretion. Its molecular formula is C 17 H 19 N 3 O 3 S, with a molecular weight of 345.42. The structural formula is: Omeprazole is a white to off-white crystalline powder that melts with decomposition at about 155°C. It is a weak base, freely soluble in ethanol and methanol, and slightly soluble in acetone and isopropanol and very slightly soluble in water. The stability of omeprazole is a function of pH; it is rapidly degraded in acid media, but has acceptable stability under alkaline conditions. Omeprazole is supplied as delayed-release capsules for oral administration. Each delayed-release capsule contains either 10 mg or 20 mg of omeprazole in the form of enteric-coated granules. The 10 mg and 20 mg capsule contains the following inactive ingredients: crospovidone, dibasic sodium phosphate, hypromellose, magnesium hydroxide granules (with corn starch), methacrylicacid and ethyl acrylate copolymer dispersion, polyethylene glycol, polysorbate 80, polyvinyl alcohol, polyvinyl alcohol-polyethylene glycol graft copolymer, purified water, silicon dioxide, sodium lauryl sulfate, sugar spheres (sucrose, corn starch, and purified water), talc, and titanium dioxide. The capsule shells for the 10 and 20 mg have the following inactive ingredients: gelatin and titanium dioxide. The ink used for printing contains: black iron oxide, potassium hydroxide, propylene glycol, shellac, and strong ammonia solution. Omeprazole delayed-release capsules meet USP Dissolution Test 2. structure