发明人赵玉洁,何建平,郑宇鹏. "Method for the Synthesis of 4-(9h-Fluoren-3-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 117366905 B, 授权公告日 2023-04-16.
发明人李文辉,刘建华,郭海燕. "A Process for Preparing High-Purity 4-(9h-Fluoren-3-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 109967857 B, 授权公告日 2025-02-16.
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