发明人赵玉洁,刘建华,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116752883 A, 授权公告日 2022-12-20.
发明人王建平,郑宇鹏,黄志刚. "Method for the Synthesis of Ethosuximide EP Impurity B" [P]. 中国发明专利, 专利号 CN 117327556 A, 授权公告日 2018-02-10.
发明人高志强,杨光,王建平. "A Process for Preparing High-Purity Ethosuximide EP Impurity B" [P]. 中国发明专利, 专利号 CN 110874621 B, 授权公告日 2019-04-27.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 1713, 9613-9629.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2012, 2452, 381-410.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Ethosuximide EP Impurity B Using HRMS and NMR". Environ. Sci. Technol., 2014, 1512, (11), 4656-4659.