Study on the Isolation and Chemical Investigation of Potential Impurities in Dexrazoxane Using 2D-NMR and LC-PDA-MS
A chemical investigation of process related impurities associated with the synthesis of dexrazoxane was performed. The degradation product of dexrazoxane is known in the literature; however, the information related to process impurities is not available. For the first time, two process related impurities were isolated, characterized, and confirmed by their individual chemical synthesis. The present study describes the isolation methods of the impurities and their structural elucidation using IR, 1 H, 13 C, 2D NMR, and mass spectrometry. The identification of these impurities would be highly valuable for the quality control during the production of the dexrazoxane drug substance. Graphic Abstract ACS Electronic Supporting Info
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