O'Brien P Q, Anderson J P, Klinger H. "Method for the Synthesis of Epalrestat Impurity 62" [P]. US Patent, US 9165366 B2, 2015-08-26.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of 依帕司他杂质62 in Pharmaceutical Formulations". J. Chromatogr. A, 2014, 2257, (9), 1185-1191.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 依帕司他杂质62 as an Impurity". Anal. Chim. Acta, 2015, 307, (12), 3763-3791.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Epalrestat Impurity 62 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2023, 1512, 9897-9900.