英文别名[(2R)-2-Hydroxy-2-phenylethyl][2-(4-nitrophenyl)ethyl]carbamic Acid 1,1-Dimethylethyl Ester; Mirabegron impurity B; Carbamic acid, N-[(2R)-2-hydroxy-2-phenylethyl]-N-[2-(4-nitrophenyl)ethyl]-, 1,1-dimethylethyl ester; Mirabegron Impurity 51; Mirabegron ImpuritiesB; tert-butyl N-[(2R)-2-hydroxy-2-phenylethyl]-N-[2-(4-nitrophenyl)ethyl]carbamate; (N-tert-Butoxycarbonyl-N-[(1'R)-hydroxy-1-phenyl)ethyl])-4-nitrophenylethylamine 
