Klinger H, Park J H, Hughes D C. "Method for the Synthesis of Methyl 4,4-difluoro-3,3-dimethyl-L-proline hydrochloride" [P]. US Patent, US 11241463 B2, 2020-10-24.
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. Nat. Prod., 2013, 1503, 9217-9224.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2016, 1616, (7), 9578-9594.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4,4-difluoro-3,3-dimethyl-L-proline hydrochloride Using HRMS and NMR". Chromatographia, 2013, 179, (1), 393-398.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2020, 1024, (8), 2783-2803.