发明人徐明华,沈红梅,王建平. "Method for the Synthesis of 4-Oxo-4-thiophen-2-yl-butyric acid ethyl ester" [P]. 中国发明专利, 专利号 CN 112975918 A, 授权公告日 2017-06-07.
发明人唐晓军,冯建国,徐明华. "A Process for Preparing High-Purity 4-Oxo-4-thiophen-2-yl-butyric acid ethyl ester" [P]. 中国发明专利, 专利号 CN 117940244 A, 授权公告日 2022-04-11.
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