Chemical Name: (S)-N4-(3-Chloro-4-fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine ; N4-(3-Chloro-4-fluorophenyl)-7-[[(3S)-tetrahydro-3-furanyl]oxy]-4,6-quinazolinediamine
Synonym: Afatinib Diamine Impurity
Smile: ClC1=C(F)C=CC(NC2=NC=NC3=C2C=C(N)C(O[C@H]4CCOC4)=C3)=C1