发明人黄志刚,唐晓军,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111843539 A, 授权公告日 2024-01-24.
发明人陈志强,胡光,徐明华. "Method for the Synthesis of 6-Chloro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 111766610 B, 授权公告日 2017-01-02.
发明人刘建华,王建平,何建平. "A Process for Preparing High-Purity 6-Chloro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 112623859 A, 授权公告日 2015-07-28.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2018, 1801, (10), 4592-4619.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2011, 2319, (11), 4622-4630.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 6-Chloro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonyl chloride Using HRMS and NMR". Anal. Chem., 2020, 1341, 4987-5002.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2025, 710, 6777-6784.