Williams B T, Hughes D C, Davis P L. "一种的合成方法" [P]. US Patent, US 9815323 B2, 2021-05-06.
发明人杨光,孙丽萍,朱建伟. "Method for the Synthesis of 1-{4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonyl}piperidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113114836 B, 授权公告日 2018-08-18.
发明人冯建国,赵玉洁,朱建伟. "A Process for Preparing High-Purity 1-{4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonyl}piperidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114650730 B, 授权公告日 2018-04-15.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2019, 417, (3), 5794-5811.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2011, 1904, 2942-2970.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 1-{4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonyl}piperidine-3-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2016, 1801, 2162-2175.