发明人林芳,张德明,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117319983 A, 授权公告日 2021-11-10.
发明人胡光,赵玉洁,马晓峰. "Method for the Synthesis of 1-(2,5-Dimethoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 108834132 A, 授权公告日 2019-09-09.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2013, 318, 5032-5055.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2021, 1229, (1), 4736-4762.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,5-Dimethoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one Using HRMS and NMR". Phytochemistry, 2014, 2201, (4), 6170-6182.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2023, 2285, (9), 111-137.