Schröder R, O'Brien P Q, Brown S R. "一种的合成方法" [P]. US Patent, US 9642439 B2, 2015-08-07.
Williams B T, Hughes D C, Johnson M A. "Method for the Synthesis of Methyl 3-(4-(difluoromethyl)-2-methyl-6-oxo-2,6-dihydro-7H-pyrazolo[3,4-b]pyridin-7-yl)propanoate" [P]. US Patent, US 9890272 B2, 2021-02-02.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2022, 523, 8774-8791.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2015, 2218, (6), 867-896.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 3-(4-(difluoromethyl)-2-methyl-6-oxo-2,6-dihydro-7H-pyrazolo[3,4-b]pyridin-7-yl)propanoate Using HRMS and NMR". Food Chem., 2025, 899, 754-779.