5-Methylisoxazole-4-(4-trifluoromethyl)car boxanilide
Leflunomide is an immuno suppressive disease-modifying antirheumatic drug (DMARD),[2] used in active moderate-to-severe rheumatoid arthritis and psoriatic arthritis. It is a pyrimidine synthesis inhibitor that works by inhibiting dihydroorotate dehydrogenase.