5′-Cytidylic acid, 2′-deoxy-, mono[28-(3′,6′-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-6-yl)-19-hydroxy-19-oxido-28-oxo-3,6,9,12,15,18,20-heptaoxa-27-aza-19-phosphaoctacos-1-yl] ester

5′-Cytidylic acid, 2′-deoxy-, mono[6-[[(3′,6′-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-6-yl)carbonyl]amino]hexyl] ester

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-8-[[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanonadec-1-yl]amino]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-8-[[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]amino]-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-8-[[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]amino]-

Adenosine, 8-[[3-[2-[2-(3-aminopropoxy)ethoxy]ethoxy]propyl]amino]-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-8-bromo-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]-

Cytidine, 2′-deoxy-N-[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]-

Cytidine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[19-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-15-oxo-4,7,10-trioxa-14-azanondec-1-yl]-

Cytidine, N-[3-[2-[2-(3-aminopropoxy)ethoxy]ethoxy]propyl]-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

6-[9-(4-Chlorobutoxy)nonyl]-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

6-(9-Butoxynonyl)-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

3-[(2R,5S)-Tetrahydro-5-(hydroxymethyl)-2-furanyl]-6-undecylfuro[2,3-d]pyrimidin-2(3H)-one

6-Nonyl-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

6-Tetradecyl-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

6-Dodecyl-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

6-Decyl-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one

6-Octyl-3-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furanyl]furo[2,3-d]pyrimidin-2(3H)-one