Chemical Name: (S,E)-N-(4-((3-chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-hydroxybut-2-enamide ; 4-Hydroxy 4-Dedimethylamino Afatinib
Synonym: Propafenone BP Impurity F ; 1,1′-[2-Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)