英文别名(S,E)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-hydroxybut-2-enamide; (E)-N-[4-(3-chloro-4-fluoroanilino)-7-[(3S)-oxolan-3-yl]oxyquinazolin-6-yl]-4-hydroxybut-2-enamide; Afatinib impurity 12; Afatinib Impurity 14; 4-Hydroxy 4-Dedimethylamino Afatinib; Afatinib 4-Hydroxy Analog; Afatinib Maleate Acid Impurity 3; 2-Butenamide, N-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-4-hydroxy-, (2E)- 
