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发明人刘建华,周伟,张德明. "A Process for Preparing High-Purity 1-(6-Phenylindolizin-3-yl)-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113384504 B, 授权公告日 2019-06-20.
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