SPL Set ID: 8bbc3af5-faa1-4af1-94e9-9df4aae242ab

The active ingredient in lansoprazole delayed-release capsules, USP is lansoprazole, a substituted benzimidazole, 2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl] methyl] sulfinyl] benzimidazole, a compound that inhibits gastric acid secretion. Its empirical formula is C 16 H 14 F 3 N 3 O 2 S with a molecular weight of 369.37. Lansoprazole has the following structure: Lansoprazole is a white to brownish-white odorless crystalline powder which melts with decomposition at approximately 166°C. Lansoprazole is freely soluble in dimethylformamide; soluble in methanol; sparingly soluble in ethanol; slightly soluble in ethyl acetate, dichloromethane and acetonitrile; very slightly soluble in ether; and practically insoluble in hexane and water. Lansoprazole is stable when exposed to light for up to two months. The rate of degradation of the compound in aqueous solution increases with decreasing pH. The degradation half-life of the drug substance in aqueous solution at 25°C is approximately 0.5 hour at pH 5.0 and approximately 18 hours at pH 7.0. Lansoprazole is supplied in delayed-release capsules for oral administration. Lansoprazole is available in two dosage strengths: 15 mg and 30 mg of lansoprazole per capsule. Each delayed-release capsule contains enteric- coated pellets consisting of 15 or 30 mg of lansoprazole (active ingredient) and the following inactive ingredients: colloidal silicon dioxide, D&C Red No. 28, FD&C Blue No.1, FD&C Red No. 40, gelatin, hypromellose, magnesium carbonate, methacrylic acid copolymer, polyethylene glycol 6000, polysorbate-80, sodium lauryl sulphate, sucrose, sugar spheres, talc and titanium dioxide. The printing ink contains potassium hydroxide, propylene glycol, shellac, strong ammonia, titanium dioxide. In addition to this, the 15 mg capsule also contains FD&C Green No.3. FDA approved dissolution test specifications differ from USP Lansoprazole-str