发明人徐明华,冯建国,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111089576 A, 授权公告日 2024-05-21.
发明人刘建华,陈志强,杨光. "Method for the Synthesis of N-(5-Chloro-2-methylphenyl)-5-ethoxy-4-oxo-4H-pyran-2-carboxamide" [P]. 中国发明专利, 专利号 CN 109328292 A, 授权公告日 2020-11-15.
发明人黄志刚,杨光,陈志强. "A Process for Preparing High-Purity N-(5-Chloro-2-methylphenyl)-5-ethoxy-4-oxo-4H-pyran-2-carboxamide" [P]. 中国发明专利, 专利号 CN 113478450 B, 授权公告日 2022-09-16.
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