Specification :

Product name: Erlotinib and its intermediates
Intermediate 1: Ethyl 3, 4-dihydroxybenzoate ( CAS No.: 3943-89-3)
Intermediate 2: Ethyl 3, 4-bis( 2-methoxyethoxy) benzoate ( CAS No.: 183322-16-9)
Intermediate 3: Ethyl 4, 5-bis( 2-methoxyethoxy) -2-nitrobenzoate ( CAS No.: 179688-27-8)
Intermediate 4: 6, 7-bis-( 2-methoxyethoxy) -quinazolin-4( 3h) -one ( CAS No.: 179688-29-0)
Intermediate 5: 4-chloro-6, 7-( 2-methoxyethoxy) -quinazoline ( CAS No.: 183322-18-1)
Water content: no more than 1.0%
Related Impurity: Total impurity: no more than 1.0%
Any impurity: no more than 0.5%
Assay: no less than 98%
Indication: treat non-small cell lung cancer and pancreatic cancer.It is a tyrosine inhibitor