1 GPC 2'-fluoroguanylyl-(3'-5')-phosphocytidine 1.000 2 IXK [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)furan-3-yl] [5-(6-aminopurin-9-yl)-3-oxidanyl-furan-2-yl]methyl hydrogen phosphate 0.756 3 UPU [(2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl (2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-4-hydroxy-2-(hydroxymethyl)tetrahydrofuran-3-yl hydrogen (S)-phosphate 0.750 4 APU Adenylyl-3'-5'-phospho-uridine-3'-monophosphate 0.729 5 CSQ O-[(2r,3s,4r,5r)-5-(4-amino-2-oxopyrimidin-1(2h)-yl)-4-hydroxy-2-(hydroxymethyl)tetrahydrofuran-3-yl] O-{[(2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl} hydrogen (R)-phosphorothioate 0.711 6 CSV O-[(2r,3s,4r,5r)-5-(4-amino-2-oxopyrimidin-1(2h)-yl)-4-hydroxy-2-(hydroxymethyl)tetrahydrofuran-3-yl] O-{[(2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl} hydrogen (S)-phosphorothioate 0.711 7 A1AEP 3'3'-cump-AMP 0.708 8 A1IJB [(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl [(2~{S},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-2-(methylsulfanylmethyl)-4-oxidanyl-oxolan-3-yl] hydrogen phosphate 0.708 9 ZNT 2'3'-cua 0.708 10 1YD 2-amino-9-[(2r,3r,3ar,5s,7as,9r,10r,10ar,12r,14as)-9-(6-amino-9h-purin-9-yl)-3,5,10,12-tetrahydroxy-5,12-dioxidooctahydro-2h,7h-difuro[3,2-D:3',2'-j][1,3,7,9,2,8]tetraoxadiphosphacyclododecin-2-yl]-1,9-dihydro-6h-purin-6-one 0.700 11 4BW 2-amino-9-[(2r,3r,3as,5r,7ar,9r,10r,10as,12r,14ar)-9-(6-amino-9h-purin-9-yl)-3,5,10,12-tetrahydroxy-5,12-dioxidooctahydro-2h,7h-difuro[3,2-D:3',2'-j][1,3,7,9,2,8]tetraoxadiphosphacyclododecin-2-yl]-1,9-dihydro-6h-purin-6-one 0.700 12 4UR 3'2'-cgamp 0.700 13 OOE 2',2'-difluoro-3',3'-cgamp 0.700