SPL Set ID: eea82d0b-6600-4693-a2b8-596a55458f61

The active ingredient in lansoprazole delayed-release capsules, USP is lansoprazole, a substituted benzimidazole, 2-[[[3-methyl-4-(2,2,2-trifluoro-ethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole, a compound that inhibits gastric acid secretion. Its molecular 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, USP is a white to brownish-white 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 pellets consisting of 15 or 30 mg of lansoprazole (active ingredient) and the following inactive ingredients: colloidal silicon dioxide, corn starch, gelatin, hydroxypropyl cellulose, low substituted hydroxypropyl cellulose, magnesium carbonate, methacrylic acid copolymer type C, polyethylene glycol, polysorbate 80, sucrose, sugar spheres (corn starch and sucrose), talc and titanium dioxide. The 15 mg capsules also contain FD&C Green No. 3 and FD&C Red No. 40. The 30 mg capsules also contain FD&C Blue No. 1 and FD&C Red No 3. The imprinting ink contains black iron oxide, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Lansoprazole Structural Formula