Afatinib Dimaleate; BIBW 2992 dimaleate; BIBW 2992MA2,(S,E)-N-(4-((3-chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide dimaleate,A radiation sensitizing agent and an ErbB2 tyrosine kinase inhibitor.,Afatinib API