发明人张德明,郭海燕,李文辉. "Method for the Synthesis of 1-Benzyl-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109951673 B, 授权公告日 2019-08-02.
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