英文别名2-chloro-4-[[7-methoxy-6-(3-morpholin-4-ylpropoxy)quinazolin-4-yl]amino]phenol; Gefitinib Impurity 4; Phenol, 2-chloro-4-[[7-Methoxy-6-[3-(4-Morpholinyl)propoxy]-4-quinazolinyl]amino]-; 2-Chloro-4-[[7-Methoxy-6-[3-(4-Morpholinyl)propoxy]-4-quinazolinyl]amino]phenol; Gefitinib Impurity B; 4-Desfluoro 4-Hydroxy Gefitinib metabolite; Gefitinib 4-Desfluoro 4-Hydroxy 
