发明人周伟,王建平,郭海燕. "Method for the Synthesis of 7-Methylpyrazolo[1,5-a]pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111324051 B, 授权公告日 2020-05-25.
发明人杨光,胡光,唐晓军. "A Process for Preparing High-Purity 7-Methylpyrazolo[1,5-a]pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108228632 B, 授权公告日 2024-05-01.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2017, 1248, (2), 5170-5176.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2015, 896, (11), 403-430.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 7-Methylpyrazolo[1,5-a]pyrimidine-5-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2023, 1435, (4), 5520-5542.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2015, 1361, 7653-7658.