Johnson M A, Yamamoto T, Fischer A B. "一种的合成方法" [P]. US Patent, US 11090071 B2, 2023-03-06.
O'Brien P Q, Roberts E F, Chen K W. "Method for the Synthesis of 273196-04-6
6,7-Dimethyl-3-(2-oxo-2-phenyl-ethylidene)-3,4-dihydro-1H-quinoxalin-2-one" [P]. US Patent, US 11433200 B2, 2019-12-14.
发明人李文辉,韩伟,罗永刚. "A Process for Preparing High-Purity 273196-04-6
6,7-Dimethyl-3-(2-oxo-2-phenyl-ethylidene)-3,4-dihydro-1H-quinoxalin-2-one" [P]. 中国发明专利, 专利号 CN 115438966 B, 授权公告日 2023-03-24.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2010, 591, 510-526.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2025, 1097, (12), 2048-2054.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 273196-04-6
6,7-Dimethyl-3-(2-oxo-2-phenyl-ethylidene)-3,4-dihydro-1H-quinoxalin-2-one Using HRMS and NMR". Environ. Sci. Technol., 2020, 793, 1876-1881.