发明人唐晓军,张德明,王建平. "Method for the Synthesis of tert-butyl 7-oxo-5,7-dihydrospiro[cyclopenta[b]pyridine-6,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 116585595 A, 授权公告日 2021-02-23.
发明人王建平,郑宇鹏,韩伟. "A Process for Preparing High-Purity tert-butyl 7-oxo-5,7-dihydrospiro[cyclopenta[b]pyridine-6,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 109862723 B, 授权公告日 2022-06-25.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2017, 1753, (12), 1930-1936.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2018, 2010, (11), 5940-5963.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of tert-butyl 7-oxo-5,7-dihydrospiro[cyclopenta[b]pyridine-6,4'-piperidine]-1'-carboxylate Using HRMS and NMR". Anal. Chem., 2022, 1248, (2), 1110-1130.