pantoprazole sodium delayed-release - Medication Listings

The active ingredient in pantoprazole sodium delayed-release tablets, 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 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 432.37. The structural formula is: Pantoprazole sodium 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, in methanol, and in dehydrated alcohol; practically insoluble in hexane and dichloromethane. 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 Delayed-Release Tablets, USP contains the following inactive ingredients: calcium stearate, crospovidone, hypromellose, ferric oxide red, ferrosoferric oxide black, mannitol, methacrylic acid- ethyl acrylate copolymer, polyethylene glycol, silicon dioxide, sodium carbonate, sucrose, talc, and triethyl citrate. Imprinting ink contains ammonium hydroxide, ferrosoferric oxide black, isopropyl alcohol, N-butyl alcohol, propylene glycol and shellac glaze. Meets USP Dissolution Test 3. 1