发明人李文辉,赵玉洁,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114310690 A, 授权公告日 2018-11-12.
发明人徐明华,周伟,钱学锋. "Method for the Synthesis of Ethyl 4-hydroxy-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 114386070 A, 授权公告日 2025-02-15.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2017, 2353, (8), 5044-5053.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2016, 1844, (2), 5233-5254.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-hydroxy-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate Using HRMS and NMR". J. Nat. Prod., 2020, 324, 8267-8280.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2014, 1377, 7138-7148.