ELT01: Erlotinib [CAS # 183321-74-6]

ELT02: Erlotinib HCl [CAS # 183319-69-9; 183321-84-8]

ELT03: Erlotinib Desmethyl Metabolite ("Major Metabolite-M14" ; "OSI-420")

ELT04: Erlotinib Desmethyl Metabolite Isomer ("Minor Metabolite-M13")

ELT05: Erlotinib Didesmethyl Metabolite ("Minor Metabolite-M12") [CAS # 183320-12-9]

ELT06: Erlotinib Carboxylic Acid ("Minor Metabolite-M6")

ELT07: Erlotinib Hydroxy Metabolite ("Minor Metabolite-M16")

ELT08: Erlotinib Lactam Impurity

6,7-bis-(2-Methoxyethoxy)-quinazolin-4(3H)-one [CAS # 179688-29-0]

ELT09: Erlotinib Chloro Impurity

4-Chloro-6,7-(2-methoxyethoxy)-quinazoline [CAS # 183322-18-1]