Björnsson E, Lefèvre J P, Schröder R. "Method for the Synthesis of Baricitinib Impurity 65" [P]. European Patent, EP 3496046 A1, 2015-02-26.
Davis P L, Kumar R, Klinger H. "A Process for Preparing High-Purity Baricitinib Impurity 65" [P]. US Patent, US 11941531 B2, 2020-03-07.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 巴瑞替尼杂质65 in Pharmaceutical Formulations". Anal. Methods, 2016, 2098, (1), 9332-9336.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 巴瑞替尼杂质65 as an Impurity". Phytochemistry, 2014, 2051, (9), 5347-5366.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Baricitinib Impurity 65 Using HRMS and NMR". J. Sep. Sci., 2023, 1717, (10), 4694-4703.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate 巴瑞替尼杂质65 Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2017, 523, (2), 8773-8799.