发明人林芳,罗永刚,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111872066 A, 授权公告日 2019-10-01.
Chen K W, Yamamoto T, Johnson M A. "Method for the Synthesis of 4,7-Dichloro-1H-imidazo[4,5-d]pyridazine" [P]. US Patent, US 9976504 B2, 2015-08-01.
Thompson G K, Park J H, Yamamoto T. "A Process for Preparing High-Purity 4,7-Dichloro-1H-imidazo[4,5-d]pyridazine" [P]. US Patent, US 10244558 B2, 2017-09-08.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2023, 2458, (1), 4484-4504.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2024, 487, (4), 2405-2411.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 4,7-Dichloro-1H-imidazo[4,5-d]pyridazine Using HRMS and NMR". Anal. Methods, 2024, 1290, 1975-1994.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2018, 1597, 6739-6750.