Fosifloxuridine nafalbenamideNUC-3373nucleotide analog NUC-33735-FU analog prodrug NUC-3373NUC3373(Fosifloxuridine nafalbenamide)phosphoramidate-FUDR-MP prodrug NUC-3373Fosifloxuridine nafalbenamide, 10 mM in DMSOL-Alanine, N-(2'-deoxy-5-fluoro-P-1-naphthalenyl-5'-uridylyl)-, phenylmethyl esterN-(2′-Deoxy-5-fluoro-P-1-naphthalenyl-5′-uridylyl)-L-alanine phenylmethyl ester (ACI)5-FU ANALOG PRODRUG NUC-3373NUCLEOTIDE ANALOG NUC-3373PHOSPHORAMIDATE-FUDR-MP PRODRUG NUC-3373