发明人陈志强,朱建伟,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113621795 A, 授权公告日 2019-07-17.
Mueller T C, Nowak P, Nielsen H. "Method for the Synthesis of 4-Methyl-1-phenyl-1H-pyrazolo[3,4-d]pyridazine-7-thiol" [P]. European Patent, EP 3086811 A1, 2025-11-02.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2012, 426, 232-247.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2022, 132, (9), 422-451.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methyl-1-phenyl-1H-pyrazolo[3,4-d]pyridazine-7-thiol Using HRMS and NMR". Environ. Sci. Technol., 2014, 1715, (7), 8491-8502.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2017, 518, (7), 4648-4662.