Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-hexadecyl-

Uridine, 3′-O-hexadecyl-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(16-methoxy-16-oxohexadecyl)-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-(16-methoxy-16-oxohexadecyl)-, 2′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(16-methoxy-16-oxohexadecyl)-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-(16-methoxy-16-oxohexadecyl)-

2,4(1H,3H)-Pyrimidinedione, 1-[3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-5,6-dideoxy-2-O-methyl-6-[(methylamino)sulfonyl]-β-D-ribo-hexofuranosyl]-

2,4(1H,3H)-Pyrimidinedione, 1-[5,6-dideoxy-2-O-methyl-6-[(methylamino)sulfonyl]-β-D-ribo-hexofuranosyl]-

2,4(1H,3H)-Pyrimidinedione, 1-[5,6-dideoxy-2-O-methyl-6-[(methylamino)sulfonyl]-β-D-ribo-hex-5-enofuranosyl]-

2,4(1H,3H)-Pyrimidinedione, 1-[5,6-dideoxy-6-[[[(1,1-dimethylethoxy)carbonyl]methylamino]sulfonyl]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-methyl-β-D-ribo-hex-5-enofuranosyl]-

Propanoic acid, 2,2-dimethyl-, 1,1′-[[[(3S,5R,6R,7S)-7-[[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]oxy]-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-6-methoxy-4-oxaspiro[2.4]hept-1-yl]phosphinylidene]bis(oxymethylene)] ester

Propanoic acid, 2,2-dimethyl-, 1,1′-[[[(3S,5R,6R,7S)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-7-hydroxy-6-methoxy-4-oxaspiro[2.4]hept-1-yl]phosphinylidene]bis(oxymethylene)] ester

Propanoic acid, 2,2-dimethyl-, 1,1′-[[[(3S,5R,6R,7S)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-7-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-methoxy-4-oxaspiro[2.4]hept-1-yl]phosphinylidene]bis(oxymethylene)] ester

Phosphonic acid, P-[(3S,5R,6R,7S)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-7-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-methoxy-4-oxaspiro[2.4]hept-1-yl]-, dimethyl ester