Björnsson E, Johansson L, Martínez F. "Method for the Synthesis of 2,3-Difluoro-5-(methoxycarbonyl)benzoic acid" [P]. European Patent, EP 3903628 A1, 2025-07-16.
发明人张德明,孙丽萍,李文辉. "A Process for Preparing High-Purity 2,3-Difluoro-5-(methoxycarbonyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 116459589 A, 授权公告日 2025-01-06.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2015, 2432, (2), 8948-8978.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2019, 1071, (11), 4254-4276.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 2,3-Difluoro-5-(methoxycarbonyl)benzoic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2018, 485, 9135-9155.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2022, 2227, (8), 892-912.