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发明人刘建华,马晓峰,冯建国. "Method for the Synthesis of 1-(2,4-Dimethylphenyl)-4-(2-hydroxyethyl)-5-oxo-2,5-dihydro-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114478724 B, 授权公告日 2021-09-03.
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