Yamamoto T, Klinger H, Kumar R. "一种的合成方法" [P]. US Patent, US 11652483 B2, 2020-03-09.
Stevens L M, Kumar R, Schröder R. "Method for the Synthesis of Methyl 6-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate" [P]. US Patent, US 11900188 B2, 2024-12-01.
发明人郑宇鹏,冯建国,沈红梅. "A Process for Preparing High-Purity Methyl 6-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate" [P]. 中国发明专利, 专利号 CN 115340408 B, 授权公告日 2021-10-21.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2020, 951, (10), 3146-3149.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2010, 850, (11), 1282-1302.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2017, 1163, 3055-3080.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2014, 368, 8659-8689.