Chen K W, Anderson J P, Yamamoto T. "一种的合成方法" [P]. US Patent, US 10559943 B2, 2021-02-04.
发明人唐晓军,黄志刚,冯建国. "Method for the Synthesis of 2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5-oxa-2-azaspiro[3.4]Octane-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112671870 A, 授权公告日 2019-09-23.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2023, 1338, (9), 800-828.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2012, 960, (5), 9698-9725.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5-oxa-2-azaspiro[3.4]Octane-7-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2019, 1997, (9), 4276-4304.