发明人王建平,钱学锋,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108444834 A, 授权公告日 2019-06-06.
发明人王建平,钱学锋,何建平. "Method for the Synthesis of 50290-51-2
CTK1G7891
Pyrimido[1,2-a]benzimidazol-4(1H)-one, 2-methyl- (9CI)" [P]. 中国发明专利, 专利号 CN 116135861 B, 授权公告日 2018-11-01.
发明人李文辉,冯建国,林芳. "A Process for Preparing High-Purity 50290-51-2
CTK1G7891
Pyrimido[1,2-a]benzimidazol-4(1H)-one, 2-methyl- (9CI)" [P]. 中国发明专利, 专利号 CN 116862121 A, 授权公告日 2016-09-17.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2012, 681, 4028-4043.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2017, 237, 1674-1679.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 50290-51-2
CTK1G7891
Pyrimido[1,2-a]benzimidazol-4(1H)-one, 2-methyl- (9CI) Using HRMS and NMR". Biomed. Chromatogr., 2025, 341, 6590-6597.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2011, 1254, 5587-5617.