SPL Set ID: 14412af6-e99c-4264-bc34-28a6f139f252

The active ingredient in Rabeprazole Sodium Delayed-Release Tablets is rabeprazole sodium, which is a proton pump inhibitor. It is a substituted benzimidazole known chemically as 2-[[[4-(3-methoxypropoxy)-3-methyl-2-pyridinyl]-methyl]sulfinyl]-1 H- benzimidazole sodium salt. It has an empirical formula of C 18 H 20 N 3 NaO 3 S and a molecular weight of 381.42. Rabeprazole sodium is a white to slightly yellowish-white solid. It is very soluble in water and methanol, freely soluble in ethanol, chloroform and ethyl acetate and insoluble in ether and n-hexane. The stability of rabeprazole sodium is a function of pH; it is rapidly degraded in acid media, and is more stable under alkaline conditions. The structural formula is: FIGURE 1 Rabeprazole Sodium Delayed-Release Tablets is available for oral administration as Delayed-Release, enteric-coated tablets containing 20 mg of rabeprazole sodium. Inactive ingredients of the 20 mg tablet are crospovidone, FD&C Blue #1, glyceryl behenate, hypromellose, lactose monohydrate, methacrylic acid copolymer dispersion, talc and triethyl citrate. Figure 1