Williams B T, Thompson G K, Hughes D C. "Method for the Synthesis of 6-METHYL-4-OXO-4H-PYRIDO[1,2-A]PYRIMIDINE-3-CARBOXAMIDE" [P]. US Patent, US 10980664 B2, 2018-10-22.
发明人唐晓军,沈红梅,郑宇鹏. "A Process for Preparing High-Purity 6-METHYL-4-OXO-4H-PYRIDO[1,2-A]PYRIMIDINE-3-CARBOXAMIDE" [P]. 中国发明专利, 专利号 CN 109314769 B, 授权公告日 2018-04-22.
参考文献 Literature
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