发明人钱学锋,杨光,李文辉. "Method for the Synthesis of 1-(3-Cyano-5-(ethoxycarbonyl)-6-methylpyridin-2-yl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114246521 B, 授权公告日 2019-11-06.
发明人唐晓军,刘建华,徐明华. "A Process for Preparing High-Purity 1-(3-Cyano-5-(ethoxycarbonyl)-6-methylpyridin-2-yl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112841100 B, 授权公告日 2022-12-17.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2015, 1857, 5816-5819.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2025, 1962, (7), 2794-2798.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 1-(3-Cyano-5-(ethoxycarbonyl)-6-methylpyridin-2-yl)piperidine-4-carboxylic acid Using HRMS and NMR". Anal. Methods, 2013, 2349, 7965-7969.