发明人刘建华,林芳,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112626537 A, 授权公告日 2021-10-14.
发明人杨光,钱学锋,孙丽萍. "Method for the Synthesis of 1,3-Dimethyl 2-{[(pyridin-4-yl)amino]methylidene}propanedioate" [P]. 中国发明专利, 专利号 CN 113935543 A, 授权公告日 2024-10-28.
发明人冯建国,沈红梅,赵玉洁. "A Process for Preparing High-Purity 1,3-Dimethyl 2-{[(pyridin-4-yl)amino]methylidene}propanedioate" [P]. 中国发明专利, 专利号 CN 113378295 B, 授权公告日 2018-05-20.
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