Capecitabine EP Impurity E

Chemical Name: 3-Methylbutyl [1-(5-deoxy-β-D-ribofuranosyl)-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]carbamate (as per EP); 5′-Deoxy-5-fluoro-N4-(2-methylbutyloxycarbonyl)cytidine (as per USP)

Smile: C[C@@H]1[C@H]([C@H]([C@H](N2C(N=C(C(F)=C2)NC(OCCC(C)C)=O)=O)O1)O)O