发明人杨光,罗永刚,李文辉. "Method for the Synthesis of 3-Butyl-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 114827986 B, 授权公告日 2019-12-15.
发明人徐明华,杨光,陈志强. "A Process for Preparing High-Purity 3-Butyl-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 114934175 B, 授权公告日 2021-06-06.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2010, 1921, (2), 4547-4571.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2017, 1656, 6481-6487.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 3-Butyl-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one Using HRMS and NMR". J. Pharm. Biomed. Anal., 2011, 1247, (11), 9733-9750.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2024, 735, (4), 9104-9113.