发明人朱建伟,冯建国,钱学锋. "Method for the Synthesis of Ethyl 3-chloro-6-(pyridin-4-yl)pyridazine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 114901811 A, 授权公告日 2022-06-19.
发明人徐明华,马晓峰,沈红梅. "A Process for Preparing High-Purity Ethyl 3-chloro-6-(pyridin-4-yl)pyridazine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 109411018 B, 授权公告日 2020-05-24.
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