Capecitabine EP Impurity E

;5'-Deoxy-5-fluoro-N-[(3-methylbutoxy)carbonyl]cytidine|[1-(5-Deoxy-β-D-ribofuranosyl)-5-fluoro-1,2-dihydro-2-oxo-4-pyrimidinyl]-carbamic acid 3-methylbutyl ester|3-methylbutyl [1-(5-deoxy-β-D-ribofuranosyl)-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]carbamate|5′-Deoxy-5-fluoro-N4-(2-methylbutyloxycarbonyl)cytidine|Capecitabine 2-Methylbutyloxy Impurity (USP)|Capecitabine 3-Methylbutyloxy Impurity (USP) ; 5?-Deoxy-5-fluoro-N4-(3-methylbutyloxycarbonyl)cytidine ;|Capecitabine EP Impurity E|isopentyl (1-(3,4-dihydroxy-5-methyltetrahydrofuran-2-yl)-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl)carbamate