SPL Set ID: 6d03491f-20c6-4878-9741-2e21e221eff2

The active ingredient in pantoprazole sodium delayed-release tablets, USP is a substituted benzimidazole, sodium 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl] sulfinyl]-1 H -benzimidazole sesquihydrate, a compound that inhibits gastric acid secretion. Its empirical formula is C 16 H 14 F 2 N 3 NaO 4 S x 1.5 H 2 O, with a molecular weight of 432.4. The structural formula is: Pantoprazole sodium, USP sesquihydrate is a white to off-white crystalline powder and is racemic. Pantoprazole has weakly basic and acidic properties. Pantoprazole sodium, USP sesquihydrate is freely soluble in water, very slightly soluble in phosphate buffer at pH 7.4, and practically insoluble in n-hexane. The stability of the compound in aqueous solution is pH-dependent. The rate of degradation increases with decreasing pH. At ambient temperature, the degradation half-life is approximately 2.8 hours at pH 5 and approximately 220 hours at pH 7.8. Pantoprazole sodium, USP is supplied as a delayed-release tablet, available in two strengths (20 mg and 40 mg). Each pantoprazole sodium delayed-release tablet, USP contains 45.1 mg or 22.56 mg of pantoprazole sodium, USP sesquihydrate (equivalent to 40 mg or 20 mg pantoprazole, respectively) with the following inactive ingredients: ammonium hydroxide, crospovidone, hydroxyl propyl cellulose, hypromellose, iron oxide black, iron oxide yellow, mannitol, methacrylic acid copolymer dispersion, polyethylene glycol, polyvinyl alcohol, povidone, propylene glycol, shellac, sodium carbonate, sodium hydroxide, sodium stearyl fumarate, talc, titanium dioxide and triethyl citrate. Pantoprazole sodium delayed-release tablets, USP (40 mg and 20 mg) complies with USP dissolution test 2. 29dcfcbf-figure-01