发明人周伟,马晓峰,韩伟. "Method for the Synthesis of 7-Chloro-2-(o-tolyl)-2H-pyrazolo[3,4-d]pyridazine" [P]. 中国发明专利, 专利号 CN 110440004 B, 授权公告日 2025-04-17.
Jørgensen K, Sørensen M, Johansson L. "A Process for Preparing High-Purity 7-Chloro-2-(o-tolyl)-2H-pyrazolo[3,4-d]pyridazine" [P]. European Patent, EP 3611602 A1, 2021-10-10.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2017, 397, (3), 5697-5704.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2022, 833, 4659-4684.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 7-Chloro-2-(o-tolyl)-2H-pyrazolo[3,4-d]pyridazine Using HRMS and NMR". J. Pharm. Biomed. Anal., 2024, 1355, (6), 5065-5079.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2012, 2198, (8), 9219-9227.