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发明人刘建华,朱建伟,李文辉. "A Process for Preparing High-Purity 2-(6-Hydroxy-3-oxo-3H-xanthen-9-yl)cyclohexanecarboxylic acid" [P]. 中国发明专利, 专利号 CN 110904425 B, 授权公告日 2023-08-08.
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