发明人唐晓军,李文辉,冯建国. "Method for the Synthesis of 1-(2-Carboxy-4-nitrophenyl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112991556 A, 授权公告日 2020-10-27.
发明人高志强,黄志刚,罗永刚. "A Process for Preparing High-Purity 1-(2-Carboxy-4-nitrophenyl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111239573 A, 授权公告日 2023-02-22.
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