发明人沈红梅,周伟,杨光. "Method for the Synthesis of 6,7-Dimethyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 117827538 A, 授权公告日 2018-02-17.
Stevens L M, Yamamoto T, Mueller T. "A Process for Preparing High-Purity 6,7-Dimethyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. US Patent, US 11540862 B2, 2023-06-04.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2010, 2033, (10), 9839-9842.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2013, 998, (1), 236-264.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Dimethyl-2H-benzo[b][1,4]oxazin-3(4H)-one Using HRMS and NMR". J. Nat. Prod., 2020, 1114, 1132-1160.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2021, 2284, (9), 3930-3954.