发明人唐晓军,刘建华,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117141496 A, 授权公告日 2019-04-22.
发明人冯建国,唐晓军,张德明. "Method for the Synthesis of 4-Ethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 111379345 B, 授权公告日 2025-11-28.
Björnsson E, Nowak P, Martínez F. "A Process for Preparing High-Purity 4-Ethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-7-carbonitrile" [P]. European Patent, EP 3195534 A1, 2022-06-07.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2021, 2255, 7010-7040.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2022, 2033, (2), 2100-2111.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-7-carbonitrile Using HRMS and NMR". Talanta, 2021, 977, (8), 7845-7849.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2024, 456, 9169-9175.