SPL Set ID: c288d1d3-3fbe-4c34-a28a-923d515809b3

Leflunomide USP is a pyrimidine synthesis inhibitor. The chemical name for leflunomide is N-(4´-trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide. It has an empirical formula C 12 H 9 F 3 N 2 O 2 , a molecular weight of 270.2 and the following structural formula: Leflunomide tablets USP are available for oral administration as tablets containing 10 mg or 20 mg of active drug. Combined with leflunomide are the following inactive ingredients: colloidal silicon dioxide, corn starch, crospovidone, hypromellose, iron oxide yellow (20 mg tablet only), lactose monohydrate, magnesium stearate, polyethylene glycol, povidone, talc, and titanium dioxide. Structure