发明人孙丽萍,沈红梅,王建平. "Method for the Synthesis of 1-Benzyl-4-hydroxy-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid ethyl ester" [P]. 中国发明专利, 专利号 CN 112851004 B, 授权公告日 2022-11-13.
发明人杨光,韩伟,王建平. "A Process for Preparing High-Purity 1-Benzyl-4-hydroxy-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid ethyl ester" [P]. 中国发明专利, 专利号 CN 117065612 A, 授权公告日 2025-12-05.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 1-苄基-4-羟基-7-氮杂吲唑-5-羧酸乙酯 in Pharmaceutical Formulations". Sci. Total Environ., 2023, 591, (12), 7713-7721.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-苄基-4-羟基-7-氮杂吲唑-5-羧酸乙酯 as an Impurity". J. Chromatogr. A, 2022, 1245, 6798-6810.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 1-Benzyl-4-hydroxy-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid ethyl ester Using HRMS and NMR". Environ. Sci. Technol., 2012, 357, (8), 4807-4824.