Schröder R, Nowak P, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3372948 A1, 2022-06-22.
发明人徐明华,林芳,韩伟. "Method for the Synthesis of tert-Butyl 2,4-dichloro-8-oxo-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate" [P]. 中国发明专利, 专利号 CN 108486047 B, 授权公告日 2022-09-01.
发明人郭海燕,周伟,林芳. "A Process for Preparing High-Purity tert-Butyl 2,4-dichloro-8-oxo-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate" [P]. 中国发明专利, 专利号 CN 110294478 B, 授权公告日 2017-04-06.
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