发明人郭海燕,刘建华,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111555769 A, 授权公告日 2021-06-11.
Fischer A B, Patel M V, Williams B T. "Method for the Synthesis of 6-Amino-2-hydroxy-5-(4-methylbenzenesulfonyl)pyridine-3-carbonitrile" [P]. US Patent, US 11314126 B2, 2020-05-14.
发明人马晓峰,王建平,冯建国. "A Process for Preparing High-Purity 6-Amino-2-hydroxy-5-(4-methylbenzenesulfonyl)pyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 109813814 B, 授权公告日 2015-06-06.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2016, 2050, 8155-8160.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2014, 271, 9106-9127.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 6-Amino-2-hydroxy-5-(4-methylbenzenesulfonyl)pyridine-3-carbonitrile Using HRMS and NMR". Molecules, 2014, 2206, (8), 43-73.