(5R)-1,2-Anhydro-5-C-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3,4-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-L-erythro-2-pentulofuranose

2′,3′-Bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-4′-C-2-propen-1-yluridine

4′-C-(2-Hydroxyethyl)-5-methyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]uridine

Uridine, 4′-C-[2-(acetyloxy)ethyl]-5-methyl-, 2′-acetate

Uridine, 4′-C-[2-(acetyloxy)ethyl]-5-methyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-acetate

4′-C-(2-Hydroxyethyl)-5-methyl-3′,5′-bis-O-(phenylmethyl)uridine

Uridine, 4′-C-[2-(acetyloxy)ethyl]-5-methyl-3′,5′-bis-O-(phenylmethyl)-, 2′-acetate

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, [(1S,3R,4R)-3-(acetylamino)-4-(phenylmethoxy)cyclopentyl][bis(phenylmethoxy)phosphinyl]methyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, [bis(phenylmethoxy)phosphinyl](3-phenoxyphenyl)methyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, (2S,3S)-3-[(acetylamino)methyl]-1-[bis(phenylmethoxy)phosphinyl]-2-(phenylmethoxy)cyclopentyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, [(1R,3S,4R)-3-[(acetylamino)methyl]-4-(phenylmethoxy)cyclopentyl][bis(phenylmethoxy)phosphinyl]methyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, [(1R,3R,4R)-3-(acetylamino)-4-(phenylmethoxy)cyclopentyl][bis(phenylmethoxy)phosphinyl]methyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)

3′-Cytidylic acid, N-[(phenylmethoxy)carbonyl]-, [bis(phenylmethoxy)phosphinyl]cyclopentylmethyl phenylmethyl ester, 2′,3′-bis(phenylmethyl carbonate)