发明人马晓峰,沈红梅,何建平. "Method for the Synthesis of Ethyl 2-((4-methyl-2-nitrophenyl)amino)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 110398151 B, 授权公告日 2019-10-06.
发明人赵玉洁,朱建伟,胡光. "A Process for Preparing High-Purity Ethyl 2-((4-methyl-2-nitrophenyl)amino)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 116921023 B, 授权公告日 2018-11-06.
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