发明人韩伟,黄志刚,罗永刚. "Method for the Synthesis of Ethyl 3-((4-chlorophenyl)amino)-2-(2,5-dioxotetrahydrofuran-3-yl)but-2-enoate" [P]. 中国发明专利, 专利号 CN 115918911 A, 授权公告日 2017-12-20.
发明人何建平,孙丽萍,杨光. "A Process for Preparing High-Purity Ethyl 3-((4-chlorophenyl)amino)-2-(2,5-dioxotetrahydrofuran-3-yl)but-2-enoate" [P]. 中国发明专利, 专利号 CN 115593197 B, 授权公告日 2021-07-21.
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