Kumar R, Stevens L M, Patel M V. "一种的合成方法" [P]. US Patent, US 11231464 B2, 2024-05-20.
发明人马晓峰,唐晓军,赵玉洁. "Method for the Synthesis of Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117596980 B, 授权公告日 2025-07-21.
发明人唐晓军,赵玉洁,何建平. "A Process for Preparing High-Purity Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113303136 A, 授权公告日 2022-04-12.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2013, 1227, 3290-3320.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2023, 2285, (6), 5632-5662.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2022, 1497, (1), 7863-7881.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2018, 1694, 2561-2579.