6-(1-Pyrrolidinyl)-2-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1,2,4-triazine-3,5(2H,4H)-dione

4-Amino-1-[5-O-[(hexyloxy)hydroxyphosphinyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

4-Amino-1-[5-O-(butoxyhydroxyphosphinyl)-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

Adenosine, N-[2-[[[5-(dimethylamino)-1-naphthalenyl]sulfonyl]amino]ethyl]cytidylyl-(3′→5′)-

Cytidine, adenylyl-(3′→5′)-N-(3-aminopropyl)-

Cytidine, adenylyl-(3′→5′)-N-(2-aminoethyl)-

Adenosine, N-(5-aminopentyl)cytidylyl-(3′→5′)-

Adenosine, N-(3-aminopropyl)cytidylyl-(3′→5′)-

Adenosine, N-(2-aminoethyl)cytidylyl-(3′→5′)-

Cytidine, adenylyl-(3′→5′)-N-(5-aminopentyl)-

Uridine, 4-deamino-4-sulfocytidylyl-(3′→5′)-, ion(2-)

Cytidine, N-(4-methoxyphenyl)-, cyclic 2′,3′-(hydrogen phosphate)

4-Pyrimidinesulfonic acid, 1,2-dihydro-2-oxo-1-(2,3-O-phosphinico-β-D-ribofuranosyl)-, ion(2-)

Cytidine, N-(4-aminophenyl)-, cyclic 2′,3′-(hydrogen phosphate)

Cytidine, 4′-C-azido-, 5′-decanoate

[(5,6-Dihydro-2-methyl-5-oxo-6-β-D-ribofuranosylimidazo[1,2-c]pyrimidin-3-yl)methyl]triphenylphosphonium

1,2,4-Triazine-3,5(2H,4H)-dione, 2-[2,5-bis-O-(1-ethoxyethyl)-3-O-phosphono-β-D-ribofuranosyl]-, 5-[O-(1-ethoxyethyl)oxime]

Guanosine, N,N,1-trimethyl-2′,3′,5′-tri-O-methyl-6-seleno-

Inosine, 8-(methylseleno)-2′,3′,5′,6-tetrakis-O-(trimethylsilyl)-

Guanosine, N,N-dimethyl-2′,3′,5′-tri-O-methyl-6-Se-methyl-6-seleno-