Roberts E F, Mueller T, Anderson J P. "一种的合成方法" [P]. US Patent, US 9231918 B2, 2022-10-24.
Lefèvre J P, Björnsson E, Nowak P. "Method for the Synthesis of 4-Acetyl-3,4-dihydro-2h-1,4-benzoxazine-2-carboxylic acid" [P]. European Patent, EP 3336563 A1, 2023-08-06.
发明人朱建伟,孙丽萍,刘建华. "A Process for Preparing High-Purity 4-Acetyl-3,4-dihydro-2h-1,4-benzoxazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108956046 B, 授权公告日 2023-04-12.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2018, 2091, (1), 519-532.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2017, 1344, 6004-6020.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Acetyl-3,4-dihydro-2h-1,4-benzoxazine-2-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2017, 1558, 4573-4576.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2015, 1772, 1281-1289.