Johnson M A, Klinger H, Stevens L M. "一种的合成方法" [P]. US Patent, US 11007749 B2, 2023-05-13.
Kowalski A, Johansson L, Björnsson E. "Method for the Synthesis of 4-(3-Ethyl-2-oxoimidazolidin-1-yl)picolinonitrile" [P]. European Patent, EP 3553147 A1, 2021-09-18.
发明人韩伟,何建平,沈红梅. "A Process for Preparing High-Purity 4-(3-Ethyl-2-oxoimidazolidin-1-yl)picolinonitrile" [P]. 中国发明专利, 专利号 CN 113042096 A, 授权公告日 2019-03-16.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2010, 2153, 6441-6471.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2016, 646, (9), 7812-7826.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 4-(3-Ethyl-2-oxoimidazolidin-1-yl)picolinonitrile Using HRMS and NMR". Food Chem., 2025, 1566, 7317-7329.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2011, 1520, 6472-6493.