SPL Set ID: de419aa0-caa9-40fb-bc6d-e341c94273c7

The active ingredient in pantoprazole sodium delayed-release tablets, USP a PPI, 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 molecular 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 is a white to off-white powder and is racemic. Pantoprazole has weakly basic and acidic properties. Pantoprazole sodium USP 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 pantoprazole (equivalent to 22.56 mg of pantoprazole sodium USP) and 40 mg pantoprazole (equivalent to 45.1 mg of pantoprazole sodium USP). Pantoprazole sodium delayed-release tablets, USP contains the following inactive ingredients: calcium stearate, crospovidone, ferric oxide, hydroxypropyl cellulose, hypromellose, mannitol, methacrylic acid and ethyl acrylate copolymer dispersion, sodium carbonate, and triethyl citrate. The tablets are imprinted with brown ink containing ammonium hydroxide, iron oxide black, iron oxide red, iron oxide yellow, isopropyl alcohol, N-butyl alcohol, propylene glycol, and shellac glaze in ethanol. Pantoprazole sodium delayed-release tablets (40 mg and 20 mg) complies USP dissolution test 3. chemical structure