发明人高志强,胡光,黄志刚. "Method for the Synthesis of 2-Ethoxy-5-nitronicotinic acid" [P]. 中国发明专利, 专利号 CN 109962161 A, 授权公告日 2016-02-17.
发明人沈红梅,刘建华,周伟. "A Process for Preparing High-Purity 2-Ethoxy-5-nitronicotinic acid" [P]. 中国发明专利, 专利号 CN 109598074 B, 授权公告日 2021-05-21.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2024, 1265, (10), 5076-5094.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2025, 526, (8), 5982-5991.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethoxy-5-nitronicotinic acid Using HRMS and NMR". J. Chromatogr. A, 2013, 81, 3308-3319.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2019, 2346, (8), 1029-1048.