Afatinib Impurity L (Afatinib N-Oxide) Afatinib IMpurity H Afatinib IMpurity C Afatinib (BIBW 2992) Afatinib Impurity 17

Afatinib Impurity 18 Afatinib IMpurity E Afatinib Impurity 19 Afatinib IMpurity F Afatinib Impurity K

Afatinib Impurity I Afatinib Impurity 15 Afatinib Impurity 12 (3-Chloro-4-methoxy-phenyl)-[6-nitro-7-(tetrahydro-furan-3-yloxy)-quinazolin-4-yl]-amine (3-Chloro-4-fluoro-phenyl)-[6-nitro-7-(tetrahydro-furan-3-yloxy)-quinazolin-4-yl]-amine

AfatinibHydrolytic impurity 6-Nitro-7-(tetrahydro-furan-3-yloxy)-quinazolin-4-ol (7-tert-Butoxy-6-nitro-quinazolin-4-yl)-(3,4-dichloro-phenyl)-amine