发明人郭海燕,徐明华,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111144442 A, 授权公告日 2017-03-11.
发明人陈志强,胡光,郑宇鹏. "Method for the Synthesis of 2,8-Phenoxathiindicarboxylic acid, 4-sulfo-, 10,10-dioxide" [P]. 中国发明专利, 专利号 CN 111399281 A, 授权公告日 2018-09-06.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2019, 2377, (11), 3950-3973.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2018, 1348, (12), 979-999.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 2,8-Phenoxathiindicarboxylic acid, 4-sulfo-, 10,10-dioxide Using HRMS and NMR". Biomed. Chromatogr., 2016, 1519, (5), 4131-4150.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2015, 653, (11), 4899-4919.