发明人王建平,张德明,郑宇鹏. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115219900 A, 授权公告日 2025-01-18.
Hughes D C, Fischer A B, Brown S R. "Method for the Synthesis of 7-Chloro-9-oxo-9H-fluorene-1-carboxylic acid" [P]. US Patent, US 10607366 B2, 2022-05-11.
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