O'Brien P Q, Mueller T, Williams B T. "一种的合成方法" [P]. US Patent, US 9966757 B2, 2017-06-23.
发明人周伟,朱建伟,孙丽萍. "Method for the Synthesis of Methyl 5-(chloromethyl)-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115302771 B, 授权公告日 2019-01-19.
发明人冯建国,王建平,杨光. "A Process for Preparing High-Purity Methyl 5-(chloromethyl)-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113638691 B, 授权公告日 2023-06-26.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2017, 967, 6781-6805.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2011, 816, (12), 8846-8858.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 5-(chloromethyl)-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2017, 1776, 2914-2921.