Nielsen H, Björnsson E, Lefèvre J P. "Method for the Synthesis of 1-(2-Chlorophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid" [P]. European Patent, EP 3438366 A1, 2018-06-01.
发明人郭海燕,周伟,李文辉. "A Process for Preparing High-Purity 1-(2-Chlorophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117021660 B, 授权公告日 2017-12-08.
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