发明人林芳,陈志强,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115895555 A, 授权公告日 2023-07-25.
Stevens L M, Williams B T, Roberts E F. "Method for the Synthesis of Methyl 2-oxo-2H-pyrimido[1,2-b]pyridazine-4-carboxylate" [P]. US Patent, US 9874952 B2, 2019-09-10.
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". J. Nat. Prod., 2021, 841, (12), 8863-8878.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2010, 1058, (2), 5181-5203.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 2-oxo-2H-pyrimido[1,2-b]pyridazine-4-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2022, 892, (4), 8655-8672.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2020, 2103, (2), 249-275.