发明人张德明,杨光,韩伟. "Method for the Synthesis of 2-((3-Chloro-2-nitrophenyl)amino)butanoic acid" [P]. 中国发明专利, 专利号 CN 117352442 A, 授权公告日 2022-04-24.
Björnsson E, Johansson L, Lefèvre J P. "A Process for Preparing High-Purity 2-((3-Chloro-2-nitrophenyl)amino)butanoic acid" [P]. European Patent, EP 3836118 A1, 2016-11-19.
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