发明人张德明,何建平,郑宇鹏. "Method for the Synthesis of 4-((9-(Hydroxymethyl)-9H-fluoren-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 111751499 A, 授权公告日 2019-01-19.
Klinger H, Roberts E F, Davis P L. "A Process for Preparing High-Purity 4-((9-(Hydroxymethyl)-9H-fluoren-2-yl)amino)-4-oxobutanoic acid" [P]. US Patent, US 9047265 B2, 2018-05-02.
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