Yamamoto T, Patel M V, Hughes D C. "一种吡拉西坦EP杂质C的合成方法" [P]. US Patent, US 9158805 B2, 2020-08-05.
Johnson M A, Hughes D C, Roberts E F. "Method for the Synthesis of Piracetam EP Impurity C" [P]. US Patent, US 10682023 B2, 2018-05-16.
发明人杨光,沈红梅,王建平. "A Process for Preparing High-Purity Piracetam EP Impurity C" [P]. 中国发明专利, 专利号 CN 111477215 A, 授权公告日 2016-12-17.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 吡拉西坦EP杂质C in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2025, 2314, (12), 3186-3190.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 吡拉西坦EP杂质C as an Impurity". J. Nat. Prod., 2017, 2242, (4), 2892-2915.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Piracetam EP Impurity C Using HRMS and NMR". J. Agric. Food Chem., 2020, 530, (7), 5372-5400.