英文别名4-(4-Chloro-1-oxobutyl)-α,α-dimethylbenzeneacetic acid; 2-[4-(4-chloro-butyryl)-phenyl]-2-methyl-propionic acid; Fexofenadine Impurity 6; 4-(4-Chloro-1-oxobutyl)-a,a-dimethylbenzeneacetic acid; 4-(4-chloro-1-oxobutyl)-alpha,alpha-dimethylbenzeneacetic acid; Fexofenadine Impurity 2 
