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发明人徐明华,沈红梅,钱学锋. "Method for the Synthesis of N-(2-((2-Methoxy-5-methylphenyl)amino)-2-oxoethyl)-6-oxo-1,6-dihydropyridine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 115991225 A, 授权公告日 2023-03-24.
发明人李文辉,罗永刚,胡光. "A Process for Preparing High-Purity N-(2-((2-Methoxy-5-methylphenyl)amino)-2-oxoethyl)-6-oxo-1,6-dihydropyridine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 108796842 B, 授权公告日 2020-04-21.
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