发明人杨光,陈志强,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108667778 A, 授权公告日 2021-05-01.
发明人罗永刚,周伟,徐明华. "Method for the Synthesis of 4-[(5S,9R)-3-(3,5-Dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7-triazaspiro[4.4]non-9-yl]benzonitrile semi (+)-DTTA salt" [P]. 中国发明专利, 专利号 CN 108105816 A, 授权公告日 2015-12-06.
Lee S K, Roberts E F, Hughes D C. "A Process for Preparing High-Purity 4-[(5S,9R)-3-(3,5-Dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7-triazaspiro[4.4]non-9-yl]benzonitrile semi (+)-DTTA salt" [P]. US Patent, US 11920696 B2, 2021-06-17.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2021, 363, 7488-7492.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2020, 539, 8889-8892.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-[(5S,9R)-3-(3,5-Dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7-triazaspiro[4.4]non-9-yl]benzonitrile semi (+)-DTTA salt Using HRMS and NMR". Molecules, 2019, 895, (6), 7732-7739.