Kowalski A, Björnsson E, Lefèvre J P. "Method for the Synthesis of Ethyl 2-(7-chloro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl)acetate" [P]. European Patent, EP 3572736 A1, 2015-02-04.
发明人孙丽萍,郑宇鹏,马晓峰. "A Process for Preparing High-Purity Ethyl 2-(7-chloro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 111808263 B, 授权公告日 2022-09-08.
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". J. Pharm. Biomed. Anal., 2019, 2445, (12), 4355-4378.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2025, 651, (4), 5298-5327.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-(7-chloro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl)acetate Using HRMS and NMR". Anal. Methods, 2019, 740, 2486-2501.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2020, 1227, 4245-4252.