发明人杨光,唐晓军,李文辉. "Method for the Synthesis of 4-(9h-Fluoren-3-yl)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 110242201 B, 授权公告日 2016-04-01.
发明人胡光,赵玉洁,马晓峰. "A Process for Preparing High-Purity 4-(9h-Fluoren-3-yl)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 111535404 B, 授权公告日 2018-11-08.
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