Lefèvre J P, Kowalski A, Schröder R. "Method for the Synthesis of Piribedil Impurity N4" [P]. European Patent, EP 3841514 A1, 2023-01-04.
发明人李文辉,朱建伟,沈红梅. "A Process for Preparing High-Purity Piribedil Impurity N4" [P]. 中国发明专利, 专利号 CN 108094792 A, 授权公告日 2024-01-27.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 吡贝地尔杂质N4 in Pharmaceutical Formulations". Molecules, 2017, 481, (10), 6182-6194.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 吡贝地尔杂质N4 as an Impurity". J. Agric. Food Chem., 2012, 1293, (9), 9311-9340.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Piribedil Impurity N4 Using HRMS and NMR". Sci. Total Environ., 2020, 1598, 1946-1971.