Anderson J P, Stevens L M, O'Brien P Q. "一种艾地苯醌杂质N2的合成方法" [P]. US Patent, US 10567189 B2, 2019-01-21.
Kowalski A, Björnsson E, Nielsen H. "Method for the Synthesis of Idebenone Impurity N2" [P]. European Patent, EP 3926342 A1, 2015-07-12.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of 艾地苯醌杂质N2 in Pharmaceutical Formulations". Anal. Chem., 2015, 1420, 6018-6031.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 艾地苯醌杂质N2 as an Impurity". Sci. Total Environ., 2012, 2130, (6), 696-710.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Idebenone Impurity N2 Using HRMS and NMR". Chromatographia, 2017, 987, 5893-5905.