5′-Adenylic acid, mono-2-pyridinyl ester

5′-Cytidylic acid, mono-2-pyridyl ester

5′-Uridylic acid, mono-2-pyridyl ester

Nitroxide, 1,1-dimethylethyl 1,2,3,4-tetrahydro-2,4-dioxo-1-β-D-ribofuranosyl-5-pyrimidinyl

Nitroxide, 6-amino-2,3-dihydro-2-oxo-3-β-D-ribofuranosyl-4-pyrimidinyl 1,1-dimethylethyl

Nitroxide, 1,1-dimethylethyl 1,2,3,6-tetrahydro-2,6-dioxo-3-β-D-ribofuranosyl-4-pyrimidinyl

Nitroxide, 6-(benzoylamino)-2,3-dihydro-2-oxo-3-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-4-pyrimidinyl 1,1-dimethylethyl

Nitroxide, 6-amino-2,3-dihydro-2-oxo-3-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-4-pyrimidinyl 1,1-dimethylethyl

Nitroxide, 1,1-dimethylethyl 6-ethoxy-2,3-dihydro-2-oxo-3-β-D-ribofuranosyl-4-pyrimidinyl

Uridine, 5-[(1,1-dimethylethyl)hydroxyamino]-

Uridine, 5-[(1,1-dimethylethyl)hydroxyamino]-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-

Cytidine, N-benzoyl-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-[(1,1-dimethylethyl)hydroxyamino]-

Cytidine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-[(1,1-dimethylethyl)hydroxyamino]-

Uridine, 6-[(1,1-dimethylethyl)hydroxyamino]-4-O-ethyl-

Uridine, 6-[(1,1-dimethylethyl)hydroxyamino]-4-O-ethyl-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 4-O-ethyl-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 6-[(1,1-dimethylethyl)hydroxyamino]-

Uridine, 6-[(acetyloxy)(1,1-dimethylethyl)amino]-5′-O-(methoxymethyl)-2′,3′-O-(1-methylethylidene)-

Uridine, 6-[(1,1-dimethylethyl)hydroxyamino]-5′-O-(methoxymethyl)-2′,3′-O-(1-methylethylidene)-

Nitroxide, 1,1-dimethylethyl 6-ethoxy-9-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purin-8-yl