发明人张德明,周伟,马晓峰. "Method for the Synthesis of 6-Methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 116965493 B, 授权公告日 2021-08-15.
Lefèvre J P, Johansson L, Björnsson E. "A Process for Preparing High-Purity 6-Methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonitrile" [P]. European Patent, EP 3380123 A1, 2023-02-03.
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