Björnsson E, Nowak P, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3952037 A1, 2018-04-15.
发明人孙丽萍,朱建伟,李文辉. "Method for the Synthesis of 2-((2-(3-Chloro-4-ethoxyphenyl)pyrazolo[1,5-a]pyrazin-4-yl)thio)acetonitrile" [P]. 中国发明专利, 专利号 CN 116129932 B, 授权公告日 2018-02-06.
Kowalski A, Lefèvre J P, Martínez F. "A Process for Preparing High-Purity 2-((2-(3-Chloro-4-ethoxyphenyl)pyrazolo[1,5-a]pyrazin-4-yl)thio)acetonitrile" [P]. European Patent, EP 3964438 A1, 2015-04-03.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2019, 1649, 5365-5371.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2024, 285, (5), 3359-3389.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2-((2-(3-Chloro-4-ethoxyphenyl)pyrazolo[1,5-a]pyrazin-4-yl)thio)acetonitrile Using HRMS and NMR". Phytochemistry, 2020, 1023, (1), 4701-4710.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2019, 1434, (7), 8427-8456.