发明人罗永刚,刘建华,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116281003 A, 授权公告日 2019-08-10.
Mueller T, Klinger H, Thompson G K. "Method for the Synthesis of 4-Ethyl-6,7-dimethyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid" [P]. US Patent, US 11232886 B2, 2025-04-23.
O'Brien P Q, Williams B T, Kumar R. "A Process for Preparing High-Purity 4-Ethyl-6,7-dimethyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid" [P]. US Patent, US 9667881 B2, 2022-03-02.
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". J. Chromatogr. A, 2024, 1038, (11), 4542-4546.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2024, 1625, (8), 738-744.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethyl-6,7-dimethyl-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid Using HRMS and NMR". Anal. Chem., 2022, 1168, (1), 2578-2601.