SPL Set ID: 88cd0e7b-e8dc-6125-e053-2a95a90aaa27

Ezetimibe and simvastatin tablets contain ezetimibe, a selective inhibitor of intestinal cholesterol and related phytosterol absorption, and simvastatin, an HMG-CoA reductase inhibitor. The chemical name of ezetimibe is 1-(4-fluorophenyl)-3( R )-[3-(4-fluorophenyl)-3( S )-hydroxypropyl]-4( S )-(4-hydroxyphenyl)-2-azetidinone.The molecular formula is C 24 H 21 F 2 NO 3 and its molecular weight is 409.4. Ezetimibe is a white, crystalline powder that is freely to very soluble in ethanol, methanol, and acetone and practically insoluble in water. Its structural formula is: Simvastatin, an inactive lactone, is hydrolyzed to the corresponding β-hydroxyacid form, which is an inhibitor of HMG-CoA reductase. Simvastatin is butanoic acid, 2,2-dimethyl-, 1,2,3,7,8,8a-hexahydro-3,7-dimethyl-8-[2-(tetrahydro-4-hydroxy-6-oxo-2 H -pyran-2-yl)ethyl]-1-naphthalenyl ester, [1 S -[1α,3 α,7β,8β(2 S *,4 S *),8aβ]].The molecular formula of simvastatin is C 25 H 38 O 5 and its molecular weight is 418.57. Simvastatin is a white to off-white powder that is practically insoluble in water and freely soluble in chloroform, methanol and ethanol. Its structural formula is: Ezetimibe and simvastatin tablets are available for oral use containing 10 mg of ezetimibe, and 10 mg of simvastatin (ezetimibe and simvastatin tablets, 10 mg/10 mg), 20 mg of simvastatin (ezetimibe and simvastatin tablets, 10 mg/20 mg), 40 mg of simvastatin (ezetimibe and simvastatin tablets, 10 mg/40 mg), or 80 mg of simvastatin (ezetimibe and simvastatin tablets, 10 mg/80 mg). Each tablet contains the following inactive ingredients: butylated hydroxyanisole, citric acid monohydrate, croscarmellose sodium, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and propyl gallate. ezetimibe structural formula simvastatin structural formula