Chemical Name: (Z)-2-Cyano-3-hydroxy-N-(4-(trifluoromethyl)phenyl)but-2-enamide
Synonym: Leflunomide USP Related Compound B
Isolation and characterization of a degradation product in leflunomide and a validated selective stability-indicating HPLC–UV method for their quantification
Balraj Saini and Gulshan Bansal
J Pharm Anal. 2015 Jun; 5(3): 207–212.
Rapid Stability Indicating HPLC Method for the Analysis of Leflunomide and Its Related Impurities in Bulk Drug and Formulations
Useni Reddy Mallu,1 Venkateswara Rao Anna,1 and Bikshal Babu Kasimala
Turk J Pharm Sci. 2019 Dec; 16(4): 457–465.