1 ID2 5-iododeoxyuridine 1.000 2 DUR 2'-deoxyuridine 0.941 3 THU Tetrahydrodeoxyuridine 0.941 4 LLT L-deoxythymidine 0.889 5 THM Thymidine 0.889 6 TYU Tetrahydrouridine 0.889 7 U33 5-bromo-2'-deoxy uridine 0.889 8 URI Uridine 0.889 9 ZEB 4-hydroxy-3,4-dihydro-zebularine 0.889 10 DDU 2'-5'dideoxyuridine 0.882 11 38T 5-methyluridine 0.842 12 3DT 3-methylthymidine 0.842 13 5HT 5-hydroxy-thymidine 0.842 14 5UD 5-fluorouridine 0.842 15 AHU 1',5'-anhydro-2',3'-dideoxy-2'-(5-iodouracil-1-yl)-D-ababino-hexitol 0.842 16 EDU 2'-deoxy-5-ethynyluridine 0.842 17 U7I 2'-deoxy-2'-fluoro-2'-methyluridine 0.842 18 UUA Uridine uronic acid 0.842 19 Y7U 2',2'-difluorodeoxyuridine 0.842 20 YC6 1-(2-deoxy-alpha-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1h,3h)-dione 0.842 21 38S 1-[(2r,5s)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.833 22 ANU 2,2'-anhydro-(1-beta-D-arabinofuranosyl)uracil 0.833 23 BJE 2,2'-anhydro-(1-beta-D-ribofuranosyl)uracil 0.833 24 D3Z 1-(5-deoxy-beta-L-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione 0.833 25 DCZ 2'-deoxycytidine 0.833 26 DHZ 3,4-dihydro-1h-pyrimidin-2-one nucleoside 0.833 27 LDC 4-amino-1-(2-deoxy-beta-L-erythro-pentofuranosyl)pyrimidin-2(1h)-one 0.833 28 U4P 5'-deoxyuridine 0.833 29 ZE8 Zebularine 0.833 30 BVD 5-bromovinyldeoxyuridine 0.800 31 EDV 1-(2-deoxy-2-methyl-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.800 32 FDU 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.800 33 UZ0 2'-azido-2'-deoxyuridine 0.800 34 0DN 5'-deoxy-5'-fluorothymidine 0.789 35 2TU 1-(beta-D-ribofuranosyl)-2-thioxo-2,3-dihydropyrimidin-4(1h)-one 0.789 36 5AT 5'-amino-5'-deoxythymidine 0.789 37 5BT 5-bromo-2'-deoxycytidine 0.789 38 AR3 Cytarabine 0.789 39 B86 2'-deoxy-5-fluorocytidine 0.789 40 CTN 4-amino-1-beta-D-ribofuranosyl-2(1h)-pyrimidinone 0.789 41 MCY 5-methyl-2'-deoxycytidine 0.789 42 URD 1-((2r,3r,4s,5r)-tetrahydro-3,4-dihydroxy-5-(hydroxymethyl)furan-2-yl)pyridine-2,4(1h,3h)-dione 0.789 43 WUV 5'-thiothymidine 0.789 44 F2U 2'-deoxy-5-ethynyl-2',2'-difluorouridine 0.762 45 GPV 1-(beta-D-glucopyranosyl)-5-iodopyrimidine-2,4(1h,3h)-dione 0.762 46 F01 4-amino-1-[(2r,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-fluoro-pyrimidin-2-one 0.750 47 GEO Gemcitabine 0.750 48 RDD 1-beta-D-ribofuranosyl-1,3,5-triazinane-2,4,6-trione 0.750 49 SCT (south)-methanocarba-thymidine 0.750 50 TCP 5'-methylthymidine 0.750 51 TMC 1-[4-hydroxy-5-(hydroxymethyl)bicyclo[3.1.0]hex-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.750 52 U56 N-hydroxycytidine 0.750 53 UZL O2'-methylycytidine 0.750 54 VVC 4-azanyl-1-[(2~{R},4~{S},5~{R})-5-ethynyl-5-(hydroxymethyl)-4-oxidanyl-oxolan-2-yl]pyrimidin-2-one 0.750 55 5IU 5-iodo-2'-deoxyuridine-5'-monophosphate 0.727 56 U2P Phosphoric acid mono-[2-(2,4-dioxo-3,4-dihydro-2h-pyrimidin-1-yl)-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-3-yl] ester 0.727 57 S7W Tegafur 0.722 58 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 0.714 59 0NP 2',3'-dideoxy-2'-fluoro-3'-triaza-1,2-dien-2-ium-1-yluridine 0.714 60 8LK Pyrrolo-dc 0.714 61 AZZ 3'-azido-3'-deoxythymidine 0.714 62 CJB 1-beta-D-glucopyranosylpyrimidine-2,4(1h,3h)-dione 0.714 63 DKX 1-(3-deoxy-3-fluoro-beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione 0.714 64 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 0.714 65 P6D 2'-azidocytidine 0.714 66 5AE 4-amino-1-(beta-D-ribofuranosyl)-1,3,5-triazin-2(1h)-one 0.700 67 BRD 1-beta-ribofuranosyl-1,3-diazepinone 0.700 68 CTD 3-deazacytidine 0.700 69 I5A 5'-deoxy-5'-iodocytidine 0.700 70 TQR 4-azanyl-1-[(2~{R},3~{R},4~{S},5~{R})-5-(hydroxymethyl)-3,4-bis(oxidanyl)thiolan-2-yl]pyrimidin-2-one 0.700