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发明人孙丽萍,罗永刚,何建平. "Method for the Synthesis of N-(4-(Diethylamino)-2-methylphenyl)-1-methyl-6-oxo-1,6-dihydropyridazine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 108637791 B, 授权公告日 2023-04-19.
发明人沈红梅,王建平,冯建国. "A Process for Preparing High-Purity N-(4-(Diethylamino)-2-methylphenyl)-1-methyl-6-oxo-1,6-dihydropyridazine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 110341601 A, 授权公告日 2020-11-15.
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