发明人徐明华,周伟,唐晓军. "Method for the Synthesis of 2-(4-(((9H-fluoren-9-yl)methoxy)carbonyl)-2-oxopiperazin-1-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 115981232 A, 授权公告日 2019-02-24.
发明人陈志强,马晓峰,徐明华. "A Process for Preparing High-Purity 2-(4-(((9H-fluoren-9-yl)methoxy)carbonyl)-2-oxopiperazin-1-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 117593124 A, 授权公告日 2019-05-28.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2014, 1235, 9445-9465.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2011, 600, 6844-6864.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-(((9H-fluoren-9-yl)methoxy)carbonyl)-2-oxopiperazin-1-yl)acetic acid Using HRMS and NMR". J. Chromatogr. A, 2021, 1449, 8637-8648.