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发明人郑宇鹏,林芳,冯建国. "Method for the Synthesis of 2,7-Dichloro-9H-fluorene" [P]. 中国发明专利, 专利号 CN 115288241 B, 授权公告日 2024-06-07.
发明人沈红梅,李文辉,孙丽萍. "A Process for Preparing High-Purity 2,7-Dichloro-9H-fluorene" [P]. 中国发明专利, 专利号 CN 110504983 B, 授权公告日 2023-11-18.
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