1 APU Adenylyl-3'-5'-phospho-uridine-3'-monophosphate 1.000 2 A1AEP 3'3'-cump-AMP 0.932 3 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 0.796 4 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 0.796 5 2BA (2r,3r,3as,5r,7ar,9r,10r,10as,12r,14ar)-2,9-bis(6-amino-9h-purin-9-yl)octahydro-2h,7h-difuro[3,2-D:3',2'-j][1,3,7,9,2,8 ]tetraoxadiphosphacyclododecine-3,5,10,12-tetrol 5,12-dioxide 0.776 6 9B7 3',3'-cdimp 0.776 7 C2I 9-[(1r,6r,8r,9s,10r,15s,17r,18s)-3,9,12,18-tetrakis(oxidanyl)-3,12-bis(oxidanylidene)-17-(6-oxidanylidene-3h-purin-9-yl)-2,4,7,11,13,16-hexaoxa-3$L^{5},12$L^{5}-diphosphatricyclo[13.3.0.0^{6,10}]octadecan-8-yl]-3h-purin-6-one 0.776 8 V7E 3',3'-C-di-araamp 0.776 9 PUP (2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-4-hydroxy-2-({[(S)-hydroxy{[(2r,3s,4s)-4-hydroxy-2-(hydroxymethyl)tetrahydrofuran-3-yl]oxy}phosphoryl]oxy}methyl)tetrahydrofuran-3-yl dihydrogen phosphate 0.767 10 C2E 9,9'-[(2r,3r,3as,5s,7ar,9r,10r,10as,12s,14ar)-3,5,10,12-tetrahydroxy-5,12-dioxidooctahydro-2h,7h-difuro[3,2-D:3',2'-j][1,3,7,9,2,8]tetraoxadiphosphacyclododecine-2,9-diyl]bis(2-amino-1,9-dihydro-6h-purin-6-one) 0.745 11 K1L 9-[(1~{R},6~{R},8~{R},9~{R},10~{R},15~{R},17~{R},18~{S})-8-(6-aminopurin-9-yl)-9-fluoranyl-3,12,18-tris(oxidanyl)-3,12-bis(oxidanylidene)-2,4,7,11,13-pentaoxa-3$L^{5},12$L^{5}-diphosphatricyclo[13.3.0.0^{6,10}]octadecan-17-yl]-3~{H}-purin-6-one 0.740 12 ZNT 2'3'-cua 0.735 13 GPC 2'-fluoroguanylyl-(3'-5')-phosphocytidine 0.729 14 OOE 2',2'-difluoro-3',3'-cgamp 0.725 15 ECI [(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-2-[[[(2~{R},3~{S},4~{R},5~{R})-5-(2-azanyl-6-oxidanylidene-1~{H}-purin-9-yl)-2-(hydroxymethyl)-4-oxidanyl-oxolan-3-yl]oxy-sulfanyl-phosphoryl]oxymethyl]-4-oxidanyl-oxolan-3-yl]oxy-sulfanyl-phosphinic acid 0.712 16 98F 9-[(1r,6r,8r,13e,15r,17r,18r)-17-(6-aminopurin-9-yl)-9,18-bis(fluoranyl)-3,12-bis(oxidanyl)-3,12-bis(oxidanylidene)-2,4,7,11,16-pentaoxa-3$L^{5},12$L^{5}-diphosphatricyclo[13.3.0.0^{6,10}]octadec-13-en-8-yl]purin-6-amine 0.706 17 JLU 9-[(1~{S},6~{R},8~{R},9~{R},10~{R},15~{R},17~{R})-8-(6-aminopurin-9-yl)-9-fluoranyl-3,12-bis(oxidanyl)-3,12-bis(oxidanylidene)-2,4,7,11,13-pentaoxa-3$L^{5},12$L^{5}-diphosphatricyclo[13.3.0.0^{6,10}]octadecan-17-yl]-2-azanyl-3~{H}-purin-6-one 0.706 18 M8T 2'-fluoro-,3',3'-C-di-AMP 0.706 19 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 0.702 20 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 0.702 21 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 0.702