Stevens L M, Anderson J P, Hughes D C. "Method for the Synthesis of (2S)-4-Fluoropyrrolidine-2-carboxamide" [P]. US Patent, US 11119317 B2, 2019-03-03.
Fischer A B, Kumar R, Yamamoto T. "A Process for Preparing High-Purity (2S)-4-Fluoropyrrolidine-2-carboxamide" [P]. US Patent, US 9227002 B2, 2024-12-27.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Molecules, 2013, 1363, 6208-6228.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". J. Pharm. Biomed. Anal., 2011, 962, (8), 9572-9594.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of (2S)-4-Fluoropyrrolidine-2-carboxamide Using HRMS and NMR". Environ. Sci. Technol., 2011, 1852, (7), 6686-6694.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2021, 564, (5), 2197-2206.