发明人郑宇鹏,沈红梅,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110975185 A, 授权公告日 2019-09-06.
发明人孙丽萍,刘建华,黄志刚. "Method for the Synthesis of 1-(6-Methoxypyrazolo[1,5-b]pyridazin-3-yl)ethanone" [P]. 中国发明专利, 专利号 CN 110507194 A, 授权公告日 2018-04-16.
Sørensen M, Nielsen H, Jørgensen K. "A Process for Preparing High-Purity 1-(6-Methoxypyrazolo[1,5-b]pyridazin-3-yl)ethanone" [P]. European Patent, EP 3805728 A1, 2017-05-27.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2012, 2139, 5223-5245.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2025, 1715, (6), 7455-7466.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-(6-Methoxypyrazolo[1,5-b]pyridazin-3-yl)ethanone Using HRMS and NMR". Anal. Chem., 2013, 385, (8), 3042-3066.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2025, 927, 6999-7023.