发明人郑宇鹏,徐明华,韩伟. "Method for the Synthesis of 1-(2-Chloro-4-nitrophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113713018 A, 授权公告日 2021-04-22.
发明人冯建国,杨光,王建平. "A Process for Preparing High-Purity 1-(2-Chloro-4-nitrophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108584210 B, 授权公告日 2019-06-26.
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