Afatinib impurity 28

Afatinib Impurity 18 Afatinib Impurity 6 Afatinib IMpurity E 4-CHLORO-7-FLUORO-6-NITRO-QUINAZOLINE Afatinib impurity 30 Afatinib Impurity 22 Afatinib Impurity L (Afatinib N-Oxide) Afatinib Impurity 9 Afatinib IMpurity H Afatinib Impurity 74 Afatinib impurity 40 Afatinib impurity 33 Afatinib Impurity 14 TRANS-4-AMINOCROTONIC ACID Afatinib Impurity 17 Afatinib Impurity 4 Afatinib impurity 27 Afatinib Impurity 2