1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl]-5-iodo-2,4(1H,3H)-pyrimidinedione

5′-Uridylic acid, anhydride with P,P′-(fluoromethylene)bis[phosphonic acid] (1:1)

Adenosine 5′-(trihydrogen diphosphate), P′→5′-ester with 7-oxo-3-β-D-ribofuranosyl-3-azaspiro[5.5]undeca-1,4-diene-1-carboxamide

Adenosine 5′-(trihydrogen diphosphate), P′→5′-ester with 3-(aminocarbonyl)-1,4-dihydro-α-(hydroxyimino)-1-β-D-ribofuranosyl-4-pyridinepropanoic acid

Uridine, 7-methyl-3′-O-methyl-, 5′-(hydrogen P-1H-imidazol-1-ylphosphonate) 2′,3′-bis(2,2,2-trifluoroacetate), anhydride with 2,2,2-trifluoroacetic acid

Adenosine, 5′-(hydrogen P-1H-imidazol-1-ylphosphonate) 2′,3′-bis(2,2,2-trifluoroacetate), anhydride with 2,2,2-trifluoroacetic acid

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-(1-propyn-1-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-5-(1-propyn-1-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[7-(2-Deoxy-β-D-erythro-pentofuranosyl)-5-(1-propyn-1-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

1-β-D-Ribofuranosyl-1H-purin-6-amine

Adenosine, 5′-ester with thiotriphosphoric acid ([(HO)2P(S)O]2P(S)(OH)) O,O′,O′′-tris(2-cyanoethyl) ester

Thymidine, 3′-azido-3′-deoxy-, 5′-ester with thiotriphosphoric acid ([(HO)2P(S)O]2P(S)(OH)) O,O′,O′′-tris(2-cyanoethyl) ester

Uridine, 5′-ester with thiotriphosphoric acid ([(HO)2P(S)O]2P(S)(OH)) O,O′,O′′-tris(2-cyanoethyl) ester

Thymidine, 5′-ester with thiotriphosphoric acid ([(HO)2P(S)O]2P(S)(OH)) O,O′,O′′-tris(2-cyanoethyl) ester

Adenosine, 5′-[P,P′,P′′-tris(2-cyanoethyl) P′′-hydrogen triphosphite]

Thymidine, 3′-azido-3′-deoxy-, 5′-[P,P′,P′′-tris(2-cyanoethyl) P′′-hydrogen triphosphite]

Uridine, 5′-[P,P′,P′′-tris(2-cyanoethyl) P′′-hydrogen triphosphite]

Thymidine, 5′-[P,P′,P′′-tris(2-cyanoethyl) P′′-hydrogen triphosphite]

N-[(1R)-1-Cyclohexyl-3-(trimethylsilyl)-2-propyn-1-yl]-N-hydroxy-2,3:5,6-bis-O-(1-methylethylidene)-α-D-mannofuranosylamine

N-[(1R)-1-Cyclopropyl-3-(trimethylsilyl)-2-propyn-1-yl]-N-hydroxy-2,3:5,6-bis-O-(1-methylethylidene)-α-D-mannofuranosylamine