发明人冯建国,张德明,韩伟. "Method for the Synthesis of 4,4-Difluoro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-2-amine" [P]. 中国发明专利, 专利号 CN 114986611 B, 授权公告日 2016-11-25.
发明人朱建伟,林芳,高志强. "A Process for Preparing High-Purity 4,4-Difluoro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-2-amine" [P]. 中国发明专利, 专利号 CN 116367397 A, 授权公告日 2017-07-11.
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". Anal. Chem., 2020, 912, 1479-1502.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2014, 2475, (5), 6147-6165.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 4,4-Difluoro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-2-amine Using HRMS and NMR". Chromatographia, 2016, 1406, 3916-3934.