发明人钱学锋,罗永刚,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109927458 A, 授权公告日 2015-10-02.
发明人唐晓军,高志强,杨光. "Method for the Synthesis of 6,7-Dimethoxy-4-methyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109687868 B, 授权公告日 2025-09-12.
发明人罗永刚,黄志刚,韩伟. "A Process for Preparing High-Purity 6,7-Dimethoxy-4-methyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108551970 A, 授权公告日 2019-02-15.
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". Anal. Chem., 2021, 1772, (10), 6651-6659.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2021, 752, 5611-5614.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Dimethoxy-4-methyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2020, 2241, 7239-7251.