发明人何建平,赵玉洁,李文辉. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114567587 A, 授权公告日 2024-09-05.
发明人张德明,马晓峰,李文辉. "Method for the Synthesis of 4-((4-((4-Aminophenyl)sulfonyl)phenyl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 108505029 B, 授权公告日 2016-07-06.
发明人何建平,朱建伟,冯建国. "A Process for Preparing High-Purity 4-((4-((4-Aminophenyl)sulfonyl)phenyl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 109328778 B, 授权公告日 2018-05-27.
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