Anderson J P, Lee S K, Davis P L. "一种的合成方法" [P]. US Patent, US 9282423 B2, 2021-07-23.
发明人周伟,沈红梅,韩伟. "Method for the Synthesis of 5-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyrazine" [P]. 中国发明专利, 专利号 CN 114332733 B, 授权公告日 2020-04-23.
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". Anal. Methods, 2012, 2020, (1), 4324-4352.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2011, 1590, 2257-2283.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyrazine Using HRMS and NMR". Food Chem., 2012, 1043, 5405-5427.