发明人刘建华,王建平,高志强. "Method for the Synthesis of 2-((Carboxymethyl)(ethyl)amino)benzoic acid" [P]. 中国发明专利, 专利号 CN 115486710 B, 授权公告日 2018-12-18.
发明人杨光,冯建国,朱建伟. "A Process for Preparing High-Purity 2-((Carboxymethyl)(ethyl)amino)benzoic acid" [P]. 中国发明专利, 专利号 CN 110623830 B, 授权公告日 2019-11-22.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Chromatographia, 2025, 541, (1), 4187-4207.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". J. Pharm. Biomed. Anal., 2011, 1004, 9170-9177.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 2-((Carboxymethyl)(ethyl)amino)benzoic acid Using HRMS and NMR". J. Agric. Food Chem., 2015, 1935, 6246-6262.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2025, 1051, 3491-3518.