发明人冯建国,郑宇鹏,林芳. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117264281 A, 授权公告日 2025-02-11.
发明人林芳,郭海燕,马晓峰. "Method for the Synthesis of 4,6-Dimethylpyrazolo[1,5-a]pyrazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117256669 A, 授权公告日 2016-02-08.
Nielsen H, Nowak P, Björnsson E. "A Process for Preparing High-Purity 4,6-Dimethylpyrazolo[1,5-a]pyrazine-2-carboxylic acid" [P]. European Patent, EP 3249942 A1, 2018-10-23.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2010, 149, (6), 2082-2107.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2019, 902, 6344-6374.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4,6-Dimethylpyrazolo[1,5-a]pyrazine-2-carboxylic acid Using HRMS and NMR". Talanta, 2024, 1011, (2), 8869-8881.