发明人徐明华,韩伟,郑宇鹏. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115433312 A, 授权公告日 2024-09-19.
发明人郑宇鹏,刘建华,周伟. "Method for the Synthesis of N2,N7-Bis(2,4-dimethylphenyl)-9-oxo-9H-fluorene-2,7-disulfonamide" [P]. 中国发明专利, 专利号 CN 116731087 B, 授权公告日 2023-04-07.
发明人赵玉洁,杨光,刘建华. "A Process for Preparing High-Purity N2,N7-Bis(2,4-dimethylphenyl)-9-oxo-9H-fluorene-2,7-disulfonamide" [P]. 中国发明专利, 专利号 CN 110908327 B, 授权公告日 2017-01-23.
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