英文别名Carbamic acid, [2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxoethyl]-, 1,1-dimethylethyl ester; tert-Butyl N-(2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxoethyl)carbamate; tert-butyl 2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxoethylcarbamate; Vilanterol Impurity 37 
