发明人杨光,黄志刚,冯建国. "Method for the Synthesis of Ethyl 2-(2-oxo-3-(3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 115574449 A, 授权公告日 2025-05-21.
发明人朱建伟,林芳,张德明. "A Process for Preparing High-Purity Ethyl 2-(2-oxo-3-(3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 114023817 A, 授权公告日 2016-08-17.
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