Teriflunomide Impurity A (EP/BP); 4-(Trifluoromethyl)benzenamine; 4-Amino-α,α,α-benzotrifluoride;4-Aminobenzotrifluoride; p-(Trifluoromethyl)aniline; p-Amino-α,α,α-trifluorotoluene; p-Aminobenzotrifluoride; p-Trifluoromethylphenylamine; α,α,α-Trifluoro-p-toluidine; 4-(Trifluoromethyl)aniline; Leflunomide Related Compound A (USP);