2',3',5'-Tri-O-(t-butyldimethylsilyl)-4'-C-hydroxy-methyluridine

4'-C-cyanouridine

2'-O-(2-Methyoxyethyl)-isoguanosine

5-Amino-1-(2-O,3-O,5-O-triacetyl-β-D-ribofuranosyl)-1H-imidazole-4-carboxamide

2,3,5-Tri-O-benzoyl-beta-D-ribofuranosylcyanide

5'-Tosyladenosine-2',3'-O-phenylboronate

(3aR,5R,6S,6aR)-6-(benzyloxy)-5-((benzyloxy)methyl)-5-ethynyl-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxole

N2-iso-Butyryl-8-azaguanosine

3-Azido-3-deoxy-1,2-O-isopropylidene-α-D-ribofuranose

1-[5,6-Dideoxy-4-C-(hydroxymethyl)-α-L-xylo-hex-5-ynofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

((3aR,4R,6R,6aR)-6-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl isobutyrate

((3aS,4S,6S,6aS)-2,2-dimethyl-6-(2-oxo-4-(1H-1,2,4-triazol-1-yl)pyrimidin-1(2H)-yl)tetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl isobutyrate

5-Fluorocytidine

((3aR,4R,6R,6aR)-6-((E)-4-(hydroxyimino)-2-oxo-3,4-dihydropyrimidin-1(2H)-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl isobutyrate

6-Chloro-9-methyl-9H-purine

2-Chloro-N6-isopropyladenosine

5-Aza-2'-deoxycytidine

5'-O-(4,4'-Dimethoxytrityl)-2'-O-methyl-N6-methyladenosine3'-CEDphosphoramidite

2'-Chloro-N6-benzyladenosine

8-Bromoadenosine 5'-(dihydrogen phosphate)