发明人王建平,刘建华,徐明华. "Method for the Synthesis of 4-((5-Methylpyridin-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 115923156 B, 授权公告日 2021-01-28.
发明人胡光,杨光,何建平. "A Process for Preparing High-Purity 4-((5-Methylpyridin-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 112169460 A, 授权公告日 2021-12-23.
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