O'Brien P Q, Kumar R, Patel M V. "一种的合成方法" [P]. US Patent, US 10366789 B2, 2019-02-03.
Schröder R, Rossi M, Björnsson E. "Method for the Synthesis of 1-(Pyrazolo[1,5-a]pyrazin-4-yl)piperidine-3-carboxylic acid" [P]. European Patent, EP 3610165 A1, 2018-04-05.
发明人冯建国,王建平,朱建伟. "A Process for Preparing High-Purity 1-(Pyrazolo[1,5-a]pyrazin-4-yl)piperidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116188609 B, 授权公告日 2022-01-02.
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., 2016, 2132, (1), 3830-3846.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2017, 1505, (4), 6230-6242.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 1-(Pyrazolo[1,5-a]pyrazin-4-yl)piperidine-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2013, 364, 2411-2423.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2011, 279, (10), 6442-6445.