SPL Set ID: e4562da8-9d94-4417-9f80-c1ffd4247259

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. The Dissolution test to be performed according to USP Test 2. Omeprazole is supplied as delayed-release capsules for oral administration. Each delayed-release capsule contains either 10 mg, 20 mg or 40 mg of omeprazole in the form of enteric-coated granules. The 10 mg and 20 mg capsule contains the following inactive ingredients: anhydrous lactose, low-substituted hydroxypropyl cellulose, magnesium oxide, magnesium stearate, microcrystalline cellulose, methacrylic acid copolymer dispersion type C, polysorbate 80, povidone and talc, triethyl citrate. The capsule shells for the 10 mg have the following inactive ingredients: black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. The capsule shells for the 20 mg have the following inactive ingredients: gelatin and titanium dioxide. The ink used for printing contains: black iron oxide, propylene glycol and shellac. The 40 mg capsule contains the following inactive ingredients: acetone, anhydrous lactose, croscarmellose sodium, dehydrated alcohol, dibutyl sebacate, hypromellose phthalate, low-substituted hydroxypropyl cellulose, microcrystalline cellulose, polysorbate 80, povidone and talc. The capsule shells for the 40 mg have the following inactive ingredients: hypromellose, red iron oxide, titanium dioxide, and yellow iron oxide. In addition, the capsule shells may also contain black iron oxide, carrageenan, and potassium chloride. The ink used for printing contains black iron oxide. structure