发明人钱学锋,徐明华,李文辉. "Method for the Synthesis of tert-Butyl 4-chloro-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate" [P]. 中国发明专利, 专利号 CN 111808196 A, 授权公告日 2022-05-12.
发明人唐晓军,赵玉洁,马晓峰. "A Process for Preparing High-Purity tert-Butyl 4-chloro-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate" [P]. 中国发明专利, 专利号 CN 109709025 B, 授权公告日 2024-11-02.
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