Davis P L, Johnson M A, Fischer A B. "Method for the Synthesis of Methyl 5-chloropyrazolo[1,5-a]pyrimidine-2-carboxylate" [P]. US Patent, US 10557355 B2, 2016-01-10.
发明人韩伟,马晓峰,胡光. "A Process for Preparing High-Purity Methyl 5-chloropyrazolo[1,5-a]pyrimidine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117456464 A, 授权公告日 2025-10-14.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2022, 306, 1581-1611.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2017, 2447, 5210-5219.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 5-chloropyrazolo[1,5-a]pyrimidine-2-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2021, 1192, (2), 2551-2575.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2022, 102, 7958-7961.