Hughes D C, Davis P L, Lee S K. "Method for the Synthesis of 6,8-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid" [P]. US Patent, US 11018195 B2, 2025-07-23.
Davis P L, Williams B T, Schröder R. "A Process for Preparing High-Purity 6,8-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid" [P]. US Patent, US 9795383 B2, 2024-10-01.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2015, 1957, (10), 1017-1042.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2022, 553, (7), 659-682.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 6,8-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid Using HRMS and NMR". Chromatographia, 2021, 1798, (2), 371-386.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2013, 362, (5), 1205-1217.