Johnson M A, Thompson G K, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 11603234 B2, 2018-08-20.
发明人郭海燕,郑宇鹏,陈志强. "Method for the Synthesis of 6-ethoxy-7-methoxy-2-[2-(methylsulfanyl)phenyl]-4H-3,1-benzoxazin-4-one" [P]. 中国发明专利, 专利号 CN 111925733 B, 授权公告日 2020-01-25.
Schröder R, Mueller T C, Sørensen M. "A Process for Preparing High-Purity 6-ethoxy-7-methoxy-2-[2-(methylsulfanyl)phenyl]-4H-3,1-benzoxazin-4-one" [P]. European Patent, EP 3654594 A1, 2022-05-10.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2019, 1583, (2), 6748-6773.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 1607, (11), 6688-6703.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 6-ethoxy-7-methoxy-2-[2-(methylsulfanyl)phenyl]-4H-3,1-benzoxazin-4-one Using HRMS and NMR". Environ. Sci. Technol., 2024, 277, (11), 4065-4070.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2021, 1040, (5), 4813-4827.