发明人孙丽萍,杨光,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111880662 A, 授权公告日 2020-03-25.
发明人朱建伟,胡光,林芳. "Method for the Synthesis of 4-((3-(Methoxycarbonyl)-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 111827733 B, 授权公告日 2017-06-11.
发明人郭海燕,杨光,李文辉. "A Process for Preparing High-Purity 4-((3-(Methoxycarbonyl)-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 114801317 B, 授权公告日 2018-08-24.
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