Thompson G K, Patel M V, Davis P L. "一种的合成方法" [P]. US Patent, US 10684748 B2, 2019-05-04.
发明人黄志刚,张德明,沈红梅. "Method for the Synthesis of 2-(4-Methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one" [P]. 中国发明专利, 专利号 CN 108033658 B, 授权公告日 2017-02-26.
发明人韩伟,孙丽萍,赵玉洁. "A Process for Preparing High-Purity 2-(4-Methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one" [P]. 中国发明专利, 专利号 CN 109244697 A, 授权公告日 2022-12-16.
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". Food Chem., 2016, 1574, (3), 1264-1275.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2023, 290, 9233-9244.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one Using HRMS and NMR". Phytochemistry, 2019, 1348, (4), 4639-4666.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2025, 1092, (12), 7954-7966.