Hughes D C, Brown S R, Roberts E F. "Method for the Synthesis of Methyl 6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-2-carboxylate" [P]. US Patent, US 10809977 B2, 2020-04-25.
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". Anal. Methods, 2023, 1823, (8), 9203-9231.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2015, 806, (7), 2651-2656.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-2-carboxylate Using HRMS and NMR". Anal. Chem., 2013, 1216, (1), 4392-4407.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2017, 146, (3), 1367-1370.