Johnson M A, O'Brien P Q, Lee S K. "一种的合成方法" [P]. US Patent, US 11742553 B2, 2021-12-18.
发明人罗永刚,陈志强,朱建伟. "Method for the Synthesis of 7-chloro-1H-pyrazolo[4,3-d]pyrimidin-5-amine" [P]. 中国发明专利, 专利号 CN 113634052 A, 授权公告日 2015-01-27.
Sørensen M, Jørgensen K, Rossi M. "A Process for Preparing High-Purity 7-chloro-1H-pyrazolo[4,3-d]pyrimidin-5-amine" [P]. European Patent, EP 3688561 A1, 2020-12-03.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2022, 170, 7974-7987.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2022, 1941, (3), 8880-8887.