Abstract
A facile synthetic protocol was employed to prepare process-related impurities associated with the synthesis of pemetrexed disodium heptahydrate, Alimta. The research work is described for the development of the novel synthetic methods and their structure elucidation of Pemetrexed glutamide, N-methyl pemetrexed, and N-methyl pemetrexed glutamide impurities. The listed impurities were deduced through spectral analysis, such as 1H-NMR, 13CNMR, and HRMS. The target compounds can be used as the reference substances for quality control.
Keywords: Pemetrexed disodium, pemetrexed glutamide impurity, multi-targeted antifolate, N-methyl pemetrexed glutamide, L-Glutamic acid, alimta.
Graphical Abstract
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