发明人孙丽萍,郭海燕,林芳. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111771575 A, 授权公告日 2020-12-16.
发明人周伟,冯建国,徐明华. "Method for the Synthesis of 6,7-Difluoro-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114186045 B, 授权公告日 2016-05-17.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2024, 407, 6397-6410.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2010, 548, (8), 6673-6703.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Difluoro-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxylic acid Using HRMS and NMR". Talanta, 2012, 908, (11), 4449-4476.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2014, 1616, (8), 5958-5964.