Johansson L, Nowak P, Mueller T C. "Method for the Synthesis of (S)-1-(tert-butoxycarbonyl)-4,4-difluoropyrrolidine-3-carboxylic acid" [P]. European Patent, EP 3867557 A1, 2017-05-20.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2016, 359, (7), 343-365.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2022, 2259, 7935-7949.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of (S)-1-(tert-butoxycarbonyl)-4,4-difluoropyrrolidine-3-carboxylic acid Using HRMS and NMR". J. Agric. Food Chem., 2010, 784, (6), 1305-1333.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2012, 227, (3), 7106-7134.