发明人沈红梅,朱建伟,孙丽萍. "Method for the Synthesis of 3,4-Difluoro-5-methylbenzoic acid" [P]. 中国发明专利, 专利号 CN 110012463 A, 授权公告日 2019-01-18.
发明人李文辉,林芳,冯建国. "A Process for Preparing High-Purity 3,4-Difluoro-5-methylbenzoic acid" [P]. 中国发明专利, 专利号 CN 113200855 B, 授权公告日 2018-10-10.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 3,4-二氟-5-甲基苯甲酸 in Pharmaceutical Formulations". Anal. Chem., 2019, 2306, 6554-6574.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3,4-二氟-5-甲基苯甲酸 as an Impurity". J. Chromatogr. A, 2015, 582, (1), 6817-6833.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 3,4-Difluoro-5-methylbenzoic acid Using HRMS and NMR". Chemosphere, 2020, 1132, (1), 8004-8030.