Sørensen M, Lefèvre J P, Martínez F. "一种的合成方法" [P]. European Patent, EP 3517585 A1, 2022-01-25.
发明人赵玉洁,李文辉,冯建国. "Method for the Synthesis of 2-(2-Cyclopropyl-4-oxo-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 111889222 A, 授权公告日 2020-09-20.
发明人刘建华,唐晓军,罗永刚. "A Process for Preparing High-Purity 2-(2-Cyclopropyl-4-oxo-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109507259 B, 授权公告日 2022-04-26.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2024, 1220, (10), 1293-1320.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2023, 2272, (7), 6751-6776.