发明人黄志刚,罗永刚,赵玉洁. "Method for the Synthesis of 1-Ethyl-3-methyl-2-oxo-1,2-dihydro-quinoxaline-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113748140 B, 授权公告日 2024-09-28.
O'Brien P Q, Williams B T, Thompson G K. "A Process for Preparing High-Purity 1-Ethyl-3-methyl-2-oxo-1,2-dihydro-quinoxaline-6-carboxylic acid" [P]. US Patent, US 10107128 B2, 2018-03-27.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2017, 1582, (4), 5743-5763.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2025, 1290, (11), 9568-9598.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-3-methyl-2-oxo-1,2-dihydro-quinoxaline-6-carboxylic acid Using HRMS and NMR". Chemosphere, 2019, 124, (5), 4339-4353.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2019, 1385, (3), 2312-2334.