发明人郭海燕,刘建华,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108290191 A, 授权公告日 2024-02-02.
O'Brien P Q, Schröder R, Yamamoto T. "Method for the Synthesis of 3,4-Difluoro-2-methoxy-5-methylbenzoic acid" [P]. US Patent, US 10498637 B2, 2023-04-26.
Yamamoto T, O'Brien P Q, Fischer A B. "A Process for Preparing High-Purity 3,4-Difluoro-2-methoxy-5-methylbenzoic acid" [P]. US Patent, US 9153066 B2, 2022-01-11.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2017, 2353, 3584-3587.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2021, 1889, (7), 7188-7207.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 3,4-Difluoro-2-methoxy-5-methylbenzoic acid Using HRMS and NMR". Chemosphere, 2025, 123, (7), 246-250.