发明人唐晓军,李文辉,朱建伟. "一种1-甲基-6-氯-1H-吡唑并[3,4-d]嘧啶-4(5H)-酮的合成方法" [P]. 中国发明专利, 专利号 CN 113220439 A, 授权公告日 2022-08-02.
发明人胡光,钱学锋,何建平. "Method for the Synthesis of 6-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 108145272 A, 授权公告日 2020-10-05.
发明人徐明华,胡光,沈红梅. "A Process for Preparing High-Purity 6-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 112103955 A, 授权公告日 2016-12-20.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 1-甲基-6-氯-1H-吡唑并[3,4-d]嘧啶-4(5H)-酮 in Pharmaceutical Formulations". Chemosphere, 2016, 762, 5697-5711.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-甲基-6-氯-1H-吡唑并[3,4-d]嘧啶-4(5H)-酮 as an Impurity". Anal. Chim. Acta, 2017, 1533, (2), 4113-4142.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 6-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one Using HRMS and NMR". Talanta, 2011, 1588, (7), 2712-2718.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate 1-甲基-6-氯-1H-吡唑并[3,4-d]嘧啶-4(5H)-酮 Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2010, 1880, (7), 711-738.