发明人杨光,唐晓军,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110683699 A, 授权公告日 2018-01-19.
发明人张德明,孙丽萍,韩伟. "Method for the Synthesis of Methyl 3-(2-cyclopentyl-6-oxo-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-7(6H)-yl)propanoate" [P]. 中国发明专利, 专利号 CN 109949176 B, 授权公告日 2016-02-24.
Fischer A B, Yamamoto T, Park J H. "A Process for Preparing High-Purity Methyl 3-(2-cyclopentyl-6-oxo-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-7(6H)-yl)propanoate" [P]. US Patent, US 9957143 B2, 2020-05-12.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2020, 527, (9), 6834-6848.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2018, 559, 6684-6691.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 3-(2-cyclopentyl-6-oxo-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-7(6H)-yl)propanoate Using HRMS and NMR". Chromatographia, 2020, 403, (12), 6926-6948.