Lipitor contains the following inactive ingredients: Calcium carbonate, microcrystalline cellulose, lactose monohydrate, croscarmellose sodium, polysorbate 80, hydroxypropyl cellulose, magnesium stearate, Opadry White YS-1-7040, Antifoam AF Emulsion Medical.
Atorvastatin calcium is (C33H34FN2O5)2Ca·3H2O with a molecular weight of 1209.42.
Atorvastatin calcium is a white to off-white crystalline powder, practically insoluble in aqueous solution of pH <4. It is very slightly soluble in distilled water, pH 7.4 phosphate buffer and acetonitrile, slightly soluble in ethanol and freely soluble in methanol.