Mueller T, O'Brien P Q, Roberts E F. "一种利扎曲普坦EP杂质A的合成方法" [P]. US Patent, US 9381410 B2, 2017-09-16.
Sørensen M, Johansson L, Rossi M. "Method for the Synthesis of Rizatriptan EP Impurity A" [P]. European Patent, EP 3403973 A1, 2020-11-05.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of 利扎曲普坦EP杂质A in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 2210, (2), 2871-2881.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 利扎曲普坦EP杂质A as an Impurity". Anal. Methods, 2019, 1275, (5), 429-439.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Rizatriptan EP Impurity A Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2014, 1683, (4), 9628-9632.