发明人赵玉洁,胡光,黄志刚. "Method for the Synthesis of 4-Oxo-4h-pyrido[1,2-a]pyrimidine-3-carboxylic acid hydrobromide" [P]. 中国发明专利, 专利号 CN 115100615 B, 授权公告日 2025-04-18.
Jørgensen K, Martínez F, Lefèvre J P. "A Process for Preparing High-Purity 4-Oxo-4h-pyrido[1,2-a]pyrimidine-3-carboxylic acid hydrobromide" [P]. European Patent, EP 3386068 A1, 2016-07-02.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2023, 730, 4297-4321.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2017, 2313, (2), 3762-3769.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Oxo-4h-pyrido[1,2-a]pyrimidine-3-carboxylic acid hydrobromide Using HRMS and NMR". Environ. Sci. Technol., 2022, 1277, (12), 1538-1559.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2010, 536, 3090-3093.