发明人孙丽萍,胡光,赵玉洁. "Method for the Synthesis of 1-Ethyl-5-hydroxy-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116899234 B, 授权公告日 2025-09-02.
发明人徐明华,张德明,杨光. "A Process for Preparing High-Purity 1-Ethyl-5-hydroxy-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117675919 A, 授权公告日 2016-02-27.
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