Fischer A B, Mueller T, Park J H. "一种的合成方法" [P]. US Patent, US 11998765 B2, 2023-07-28.
发明人刘建华,马晓峰,韩伟. "Method for the Synthesis of 4-Chloro-7H-imidazo[4,5-c]pyridazine" [P]. 中国发明专利, 专利号 CN 116665233 A, 授权公告日 2024-04-02.
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". Anal. Chem., 2010, 1311, (8), 4179-4188.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2017, 721, (3), 4098-4111.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-7H-imidazo[4,5-c]pyridazine Using HRMS and NMR". Environ. Sci. Technol., 2015, 409, 1427-1449.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2025, 1854, (2), 3926-3932.