Synonyms: OSI 774, Tarceva, 6,7-Bis(2-methoxyethoxy)-4-(3-ethynylanilino)quinazoline hydrochloride, [6,7-Bis(2-methoxyethoxy)quinazolin-4-yl]-(3-ethynylphenyl)amine hydrochloride, CP 358774,Erlotinib hydrochloride, 4-Quinazolinamine, N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)-, hydrochloride (1:1), 4-Quinazolinamine, N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)-, monohydrochloride (9CI)