发明人陈志强,杨光,赵玉洁. "Method for the Synthesis of Ethyl 5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117120355 A, 授权公告日 2018-09-17.
Stevens L M, Kumar R, Patel M V. "A Process for Preparing High-Purity Ethyl 5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. US Patent, US 10539153 B2, 2024-06-16.
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". J. Chromatogr. A, 2024, 102, (8), 4743-4767.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2017, 1858, (8), 2130-2155.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate Using HRMS and NMR". Anal. Chim. Acta, 2017, 1552, 9605-9615.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2012, 900, 9569-9573.