1-methyl-5-(2-deoxy-2-fluoro-5-O-trityl-β-D-lyxofuranosyl)uracil
Methanesulfonic acid (2R,3S,4R,5S)-4-fluoro-5-(1-methyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl)-2-trityloxymethyl-tetrahydro-furan-3-yl ester
1-methyl-5-(3-azido-2,3-dideoxy-2-fluoro-5-O-trityl-β-D-arabinofuranosyl)uracil
1-methyl-5-(3-azido-2,3-dideoxy-2-fluoro-β-D-arabinofuranosyl)uracil
1-methyl-5-(2-deoxy-2-fluoro-5-O-trityl-β-D-arabinofuranosyl)uracil