发明人周伟,张德明,朱建伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110386194 A, 授权公告日 2025-04-08.
发明人沈红梅,王建平,黄志刚. "Method for the Synthesis of 6'-(3-Ethylureido)-[3,3'-bipyridine]-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109455313 A, 授权公告日 2024-04-26.
Hughes D C, Mueller T, Davis P L. "A Process for Preparing High-Purity 6'-(3-Ethylureido)-[3,3'-bipyridine]-5-carboxylic acid" [P]. US Patent, US 9967919 B2, 2023-10-27.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2014, 1566, 4798-4825.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2018, 2295, (3), 8958-8983.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 6'-(3-Ethylureido)-[3,3'-bipyridine]-5-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2017, 1631, (9), 9703-9709.