追加説明:
Ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate hydrochloride (CAS 183322-17-0) is an erlotinib intermediate, part of a synthesis route that also involves 6,7-bis(2-methoxyethoxy)quinazolin-4(3H)-one and 4-chloro-6,7-bis(2-methoxyethoxy)quinazoline. It meets ChP standards and is supplied by Beijing Lunarsun Pharmaceutical Co., Ltd., which trades rather than manufactures the compound.
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