Synonyms: (2Z)-2-cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-2-Butenamide, 2-Butenamide, 2-cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-, (Z)-, A 1726, A 77-1726, A 771726, Aubagio, Flucyamide, HMR 1726, SU 20, Teriflunomide,(2Z)-2-Cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]but-2-enamide, Leflunomide Imp. B (EP)