SPL Set ID: 75691c2d-2265-4153-bc3a-4f7d5d51e250

The active ingredient in Lansoprazole Delayed-Release Capsules 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 delayed-release capsules are available in two dosage strengths: 15 and 30 mg of lansoprazole per capsule. Each delayed-release capsule contains enteric-coated granules consisting of 15 or 30 mg of lansoprazole (active ingredient) and the following inactive ingredients: sugar sphere, maize starch, ethylcellulose, hydroxypropyl methylcellulose, magnesium carbonate, low-substituted hydroxypropyl cellulose, talc, polyethylene glycol, methacrylic acid copolymer, titanium dioxide, polysorbate 80, colloidal silicon dioxide, FD & C blue 1, D & C red 28, FD & C red 40, gelatin, FD & C green 31 1 Lansoprazole 15-mg capsules only. FDA approved dissolution test specifications differ from USP. lansoprazole-structure