Lefèvre J P, Kowalski A, Rossi M. "Method for the Synthesis of (5-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-6-yl)acetic acid" [P]. European Patent, EP 3087107 A1, 2019-02-14.
发明人马晓峰,周伟,唐晓军. "A Process for Preparing High-Purity (5-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-6-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 113118252 A, 授权公告日 2015-03-17.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2021, 1027, 3271-3286.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2021, 883, (1), 6015-6033.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of (5-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-6-yl)acetic acid Using HRMS and NMR". Talanta, 2012, 2411, (4), 4724-4739.