O'Brien P Q, Brown S R, Fischer A B. "一种的合成方法" [P]. US Patent, US 9564724 B2, 2020-09-24.
发明人陈志强,胡光,郑宇鹏. "Method for the Synthesis of EThyl 4-amino-6-methyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 112778610 A, 授权公告日 2023-12-25.
Klinger H, Mueller T, Yamamoto T. "A Process for Preparing High-Purity EThyl 4-amino-6-methyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. US Patent, US 11483052 B2, 2024-03-02.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2021, 492, (6), 633-656.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2012, 589, 4490-4514.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of EThyl 4-amino-6-methyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-5-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2015, 2266, 718-748.