发明人黄志刚,赵玉洁,李文辉. "Method for the Synthesis of 4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)nicotinic acid" [P]. 中国发明专利, 专利号 CN 110596864 A, 授权公告日 2022-03-23.
发明人高志强,沈红梅,何建平. "A Process for Preparing High-Purity 4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)nicotinic acid" [P]. 中国发明专利, 专利号 CN 108548015 A, 授权公告日 2021-11-14.
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