发明人钱学锋,周伟,林芳. "Method for the Synthesis of Retigabine Impurity 4" [P]. 中国发明专利, 专利号 CN 115488162 A, 授权公告日 2019-07-09.
发明人刘建华,张德明,朱建伟. "A Process for Preparing High-Purity Retigabine Impurity 4" [P]. 中国发明专利, 专利号 CN 108079117 A, 授权公告日 2016-12-13.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of 瑞替加滨杂质4 in Pharmaceutical Formulations". Molecules, 2013, 2411, 2205-2230.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 瑞替加滨杂质4 as an Impurity". Food Chem., 2021, 537, (2), 3142-3145.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Retigabine Impurity 4 Using HRMS and NMR". Environ. Sci. Technol., 2021, 478, (7), 3163-3175.