1 DUR 2'-deoxyuridine 1.000 2 THU Tetrahydrodeoxyuridine 1.000 3 ID2 5-iododeoxyuridine 0.941 4 LLT L-deoxythymidine 0.941 5 THM Thymidine 0.941 6 TYU Tetrahydrouridine 0.941 7 U33 5-bromo-2'-deoxy uridine 0.941 8 URI Uridine 0.941 9 ZEB 4-hydroxy-3,4-dihydro-zebularine 0.941 10 DDU 2'-5'dideoxyuridine 0.938 11 38T 5-methyluridine 0.889 12 3DT 3-methylthymidine 0.889 13 5HT 5-hydroxy-thymidine 0.889 14 5UD 5-fluorouridine 0.889 15 EDU 2'-deoxy-5-ethynyluridine 0.889 16 U7I 2'-deoxy-2'-fluoro-2'-methyluridine 0.889 17 UUA Uridine uronic acid 0.889 18 38S 1-[(2r,5s)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.882 19 ANU 2,2'-anhydro-(1-beta-D-arabinofuranosyl)uracil 0.882 20 BJE 2,2'-anhydro-(1-beta-D-ribofuranosyl)uracil 0.882 21 D3Z 1-(5-deoxy-beta-L-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione 0.882 22 DCZ 2'-deoxycytidine 0.882 23 DHZ 3,4-dihydro-1h-pyrimidin-2-one nucleoside 0.882 24 LDC 4-amino-1-(2-deoxy-beta-L-erythro-pentofuranosyl)pyrimidin-2(1h)-one 0.882 25 U4P 5'-deoxyuridine 0.882 26 ZE8 Zebularine 0.882 27 BVD 5-bromovinyldeoxyuridine 0.842 28 EDV 1-(2-deoxy-2-methyl-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.842 29 FDU 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.842 30 UZ0 2'-azido-2'-deoxyuridine 0.842 31 0DN 5'-deoxy-5'-fluorothymidine 0.833 32 2TU 1-(beta-D-ribofuranosyl)-2-thioxo-2,3-dihydropyrimidin-4(1h)-one 0.833 33 5AT 5'-amino-5'-deoxythymidine 0.833 34 5BT 5-bromo-2'-deoxycytidine 0.833 35 AR3 Cytarabine 0.833 36 B86 2'-deoxy-5-fluorocytidine 0.833 37 CTN 4-amino-1-beta-D-ribofuranosyl-2(1h)-pyrimidinone 0.833 38 MCY 5-methyl-2'-deoxycytidine 0.833 39 URD 1-((2r,3r,4s,5r)-tetrahydro-3,4-dihydroxy-5-(hydroxymethyl)furan-2-yl)pyridine-2,4(1h,3h)-dione 0.833 40 WUV 5'-thiothymidine 0.833 41 F2U 2'-deoxy-5-ethynyl-2',2'-difluorouridine 0.800 42 AHU 1',5'-anhydro-2',3'-dideoxy-2'-(5-iodouracil-1-yl)-D-ababino-hexitol 0.789 43 F01 4-amino-1-[(2r,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-fluoro-pyrimidin-2-one 0.789 44 GEO Gemcitabine 0.789 45 RDD 1-beta-D-ribofuranosyl-1,3,5-triazinane-2,4,6-trione 0.789 46 SCT (south)-methanocarba-thymidine 0.789 47 TCP 5'-methylthymidine 0.789 48 TMC 1-[4-hydroxy-5-(hydroxymethyl)bicyclo[3.1.0]hex-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.789 49 U56 N-hydroxycytidine 0.789 50 UZL O2'-methylycytidine 0.789 51 VVC 4-azanyl-1-[(2~{R},4~{S},5~{R})-5-ethynyl-5-(hydroxymethyl)-4-oxidanyl-oxolan-2-yl]pyrimidin-2-one 0.789 52 S7W Tegafur 0.765 53 U2P Phosphoric acid mono-[2-(2,4-dioxo-3,4-dihydro-2h-pyrimidin-1-yl)-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-3-yl] ester 0.762 54 0MI 1-[(2~{R},4~{S},5~{R})-5-[[(azanylidene-$L^{4}-azanylidene)amino]methyl]-4-oxidanyl-oxolan-2-yl]-5-methyl-pyrimidine-2,4-dione 0.750 55 0NP 2',3'-dideoxy-2'-fluoro-3'-triaza-1,2-dien-2-ium-1-yluridine 0.750 56 8LK Pyrrolo-dc 0.750 57 AZZ 3'-azido-3'-deoxythymidine 0.750 58 CJB 1-beta-D-glucopyranosylpyrimidine-2,4(1h,3h)-dione 0.750 59 DKX 1-(3-deoxy-3-fluoro-beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione 0.750 60 LKC 4-amino-1-[(1s,3r,4r,7s)-7-hydroxy-1-(hydroxymethyl)-2,5-dioxabicyclo[2.2.1]hept-3-yl]-5-methylpyrimidin-2(1h)-one 0.750 61 P6D 2'-azidocytidine 0.750 62 5AE 4-amino-1-(beta-D-ribofuranosyl)-1,3,5-triazin-2(1h)-one 0.737 63 BRD 1-beta-ribofuranosyl-1,3-diazepinone 0.737 64 CTD 3-deazacytidine 0.737 65 I5A 5'-deoxy-5'-iodocytidine 0.737 66 BTD 5-bromothienyldeoxyuridine 0.727 67 3TC 4-amino-1-[(2r,5s)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1h)-one 0.722 68 LTT 4-amino-1-[(2s,4s)-2-(hydroxymethyl)-1,3-dioxolan-4-yl]pyrimidin-2(1h)-one 0.722 69 3KA 1-(2-deoxy-5-O-phosphono-beta-L-erythro-pentofuranosyl)pyrimidine-2,4(1h,3h)-dione 0.714 70 8HG 2'-deoxy-8-oxoguanosine 0.714 71 ADT 3'-deoxy-3'-acetamido-thymidine 0.714 72 ADU 3'-deoxy-3'-acetamido-uridine 0.714 73 CKB 1-beta-D-glucopyranosyl-5-methylpyrimidine-2,4(1h,3h)-dione 0.714 74 DDN 3,4-dihydro-2'-deoxyuridine-5'-monophosphate 0.714 75 DK4 1-(3-deoxy-3-fluoro-beta-D-glucopyranosyl)-5-fluoropyrimidine-2,4(1h,3h)-dione 0.714 76 DU 2'-deoxyuridine-5'-monophosphate 0.714 77 DUS 2'-deoxy-5'-O-sulfouridine 0.714 78 GPK 5-fluoro-1-(beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione 0.714 79 GPQ 5-chloro-1-(beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione 0.714 80 GPU 5-bromo-1-(beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione 0.714 81 GPV 1-(beta-D-glucopyranosyl)-5-iodopyrimidine-2,4(1h,3h)-dione 0.714 82 JKM 1-[(2s,3as,4s,6r,6ar)-2-hydroxy-6-(hydroxymethyl)-2-oxidotetrahydrofuro[3,4-D][1,3,2]dioxaphosphol-4-yl]pyrimidine-2,4( 1h,3h)-dione 0.714 83 MMT 5'-O-(dimethylamino)-thymidine 0.714 84 P0C 6-methyl-3-(beta-D-ribofuranosyl)-3,7-dihydro-2h-pyrrolo[2,3-D]pyrimidin-2-one 0.714 85 UM3 2'-deoxyuridine 3'-monophosphate 0.714 86 UMC 2'-deoxy-5'-uridylic acid 0.714 87 UMP 2'-deoxyuridine 5'-monophosphate 0.714 88 UPS 2'-deoxy-5'-O-thiophosphonouridine 0.714 89 UPT 1-[(2r,3ar,4r,6r,6ar)-2-hydroxy-6-(hydroxymethyl)-2-sulfidotetrahydrofuro[3,4-D][1,3,2]dioxaphosphol-4-yl]pyrimidine-2,4(1h,3h)-dione 0.714 90 XCI [(2~{S},3~{S},5~{R})-5-[5-methyl-2,4-bis(oxidanylidene)pyrimidin-1-yl]-3-oxidanyl-oxolan-2-yl]methylselanylphosphonous acid 0.714 91 XY7 1-[2-deoxy-5-O-(dihydroxyphosphanyl)-2-fluoro-beta-L-ribofuranosyl]pyrimidine-2,4(1h,3h)-dione 0.714 92 2ND 2'-deoxyinosine 0.700