英文别名Clenbuterol impurity 1; 1-(4-Amino-3,5-dichloro-phenyl)-2-tert-butylamino-ethanone Hydrochloride; 1-(4-Amino-3,5-dichlorophenyl)-2-[(2-methyl-2-propanyl)amino]ethanone hydrochloride (1:1); Keto Clenbuterol; 1-(4-Amino-3,5-dichloro-phenyl)-2-tert-butylamino-ethanone Monohydrochloride; Clenbuterol EP Impurity B HCl; Clenbuterol Impurity 2（Clenbuterol EP Impurity B） 
