英文别名5-(2-Bromoethyl)-2,3-dihydrobenzo[b]furan; 5-(2-Bromoethyl)-2,3-dihydrobenzofuram; 5-(2-bromoethyl)-2,3-dihydrobenzofuran (Darifenacin); 5-(2-Bromoethyl)-2,3-dihydrobenzo[2,3-β]furan; 5-(2 Bromoethyl)-2,3-dihyrobenzofuran; Darifenacin Impurity B; 5-(2-Bromoethyl)coumaran; 5-(2-Bromoethyl)-2,3-dihydro-1-benzofuran; Darifenacin Bromo Impurity 
