发明人冯建国,郭海燕,韩伟. "Method for the Synthesis of 4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-fluoro-5-methoxybenzoic acid" [P]. 中国发明专利, 专利号 CN 113965402 A, 授权公告日 2022-07-08.
发明人郑宇鹏,高志强,赵玉洁. "A Process for Preparing High-Purity 4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-fluoro-5-methoxybenzoic acid" [P]. 中国发明专利, 专利号 CN 117140677 A, 授权公告日 2018-10-25.
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