发明人唐晓军,李文辉,沈红梅. "Method for the Synthesis of 6-Bromo-7-chloro-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 114699444 B, 授权公告日 2021-06-15.
发明人韩伟,林芳,郭海燕. "A Process for Preparing High-Purity 6-Bromo-7-chloro-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 109058322 B, 授权公告日 2025-06-06.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2022, 1024, (1), 8983-8989.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2023, 745, 4680-4694.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 6-Bromo-7-chloro-2H-benzo[b][1,4]oxazin-3(4H)-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2024, 1754, (7), 4212-4232.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2023, 134, (12), 2252-2268.