发明人郑宇鹏,唐晓军,冯建国. "Method for the Synthesis of 3-Methyl-5,8-dihydro-1H-pyrazolo[1,2-a]pyridazin-1-one" [P]. 中国发明专利, 专利号 CN 110150515 B, 授权公告日 2024-07-27.
Jørgensen K, Kowalski A, Sørensen M. "A Process for Preparing High-Purity 3-Methyl-5,8-dihydro-1H-pyrazolo[1,2-a]pyridazin-1-one" [P]. European Patent, EP 3184272 A1, 2023-12-18.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2012, 181, (6), 3950-3956.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2022, 741, (11), 1333-1337.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 3-Methyl-5,8-dihydro-1H-pyrazolo[1,2-a]pyridazin-1-one Using HRMS and NMR". Environ. Sci. Technol., 2010, 1532, 5749-5761.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2018, 562, 9730-9749.