发明人张德明,杨光,王建平. "Method for the Synthesis of 5-(4-Ethoxy-3-methoxyphenyl)-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114028850 A, 授权公告日 2017-12-25.
发明人郭海燕,周伟,李文辉. "A Process for Preparing High-Purity 5-(4-Ethoxy-3-methoxyphenyl)-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112518545 B, 授权公告日 2020-05-23.
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