Yamamoto T, Klinger H, Fischer A B. "一种的合成方法" [P]. US Patent, US 10681479 B2, 2022-07-22.
发明人沈红梅,钱学锋,冯建国. "Method for the Synthesis of 6-Hydroxy-1-(2-hydroxyethyl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 112586368 B, 授权公告日 2016-09-03.
发明人钱学锋,张德明,黄志刚. "A Process for Preparing High-Purity 6-Hydroxy-1-(2-hydroxyethyl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 112919968 A, 授权公告日 2023-04-27.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2013, 2222, (6), 487-499.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 646, (7), 8615-8624.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 6-Hydroxy-1-(2-hydroxyethyl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile Using HRMS and NMR". Anal. Methods, 2010, 307, (12), 6382-6398.