N-(4-bromo-2-fluorophenyl)-6-methoxy-7-((1-methylpiperidin-4-yl)methoxy)quinazolin-4-amine-D4; N-(4-Bromo-2-fluorophenyl)-6-methoxy-7-[[1-methyl-4-(piperidinyl-d4)]methoxy]-4-quinazolinamine; 4-(4-Bromo-2-fluoroanilino)-6-methoxy-7-[[1-methyl(piperidin-4-yl)-d4]methoxy]quinazoline; ZD 6474-d4; Zactima-d4;