发明人钱学锋,唐晓军,胡光. "Method for the Synthesis of 8-chloro-1-methyl-3,4-dihydro-2H-pyrimido[1,2-c]pyrimidin-6-one" [P]. 中国发明专利, 专利号 CN 115741400 B, 授权公告日 2022-12-28.
发明人赵玉洁,徐明华,朱建伟. "A Process for Preparing High-Purity 8-chloro-1-methyl-3,4-dihydro-2H-pyrimido[1,2-c]pyrimidin-6-one" [P]. 中国发明专利, 专利号 CN 112894478 A, 授权公告日 2024-05-18.
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