发明人王建平,李文辉,朱建伟. "Method for the Synthesis of 4-[2-(carbamoylamino)ethyl]benzoic acid" [P]. 中国发明专利, 专利号 CN 113347739 A, 授权公告日 2017-12-02.
发明人郑宇鹏,韩伟,罗永刚. "A Process for Preparing High-Purity 4-[2-(carbamoylamino)ethyl]benzoic acid" [P]. 中国发明专利, 专利号 CN 111738434 A, 授权公告日 2024-07-06.
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