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发明人郭海燕,刘建华,李文辉. "A Process for Preparing High-Purity 5-Hydroxy-1,3-dimethyl-N-phenyl-1H-pyrazole-4-carboxamide" [P]. 中国发明专利, 专利号 CN 115791395 B, 授权公告日 2019-03-09.
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