1 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 1.000 2 MCY 5-methyl-2'-deoxycytidine 0.895 3 DCZ 2'-deoxycytidine 0.842 4 LDC 4-amino-1-(2-deoxy-beta-L-erythro-pentofuranosyl)pyrimidin-2(1h)-one 0.842 5 5BT 5-bromo-2'-deoxycytidine 0.800 6 AR3 Cytarabine 0.800 7 B86 2'-deoxy-5-fluorocytidine 0.800 8 CTN 4-amino-1-beta-D-ribofuranosyl-2(1h)-pyrimidinone 0.800 9 LLT L-deoxythymidine 0.800 10 THM Thymidine 0.800 11 38T 5-methyluridine 0.762 12 3DT 3-methylthymidine 0.762 13 5HT 5-hydroxy-thymidine 0.762 14 EDU 2'-deoxy-5-ethynyluridine 0.762 15 F01 4-amino-1-[(2r,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-fluoro-pyrimidin-2-one 0.762 16 GEO Gemcitabine 0.762 17 TMC 1-[4-hydroxy-5-(hydroxymethyl)bicyclo[3.1.0]hex-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.762 18 UZL O2'-methylycytidine 0.762 19 VVC 4-azanyl-1-[(2~{R},4~{S},5~{R})-5-ethynyl-5-(hydroxymethyl)-4-oxidanyl-oxolan-2-yl]pyrimidin-2-one 0.762 20 38S 1-[(2r,5s)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione 0.750 21 DHZ 3,4-dihydro-1h-pyrimidin-2-one nucleoside 0.750 22 DUR 2'-deoxyuridine 0.750 23 LCC [(1r,3r,4r,7s)-7-hydroxy-3-(5-methylcytosin-1-yl)-2,5-dioxabicyclo[2.2.1]hept-1-yl]methyl dihydrogen phosphate 0.750 24 THU Tetrahydrodeoxyuridine 0.750 25 ZE8 Zebularine 0.750 26 BVD 5-bromovinyldeoxyuridine 0.727 27 EDV 1-(2-deoxy-2-methyl-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.727 28 FDU 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione 0.727 29 P6D 2'-azidocytidine 0.727 30 0DN 5'-deoxy-5'-fluorothymidine 0.714 31 5AE 4-amino-1-(beta-D-ribofuranosyl)-1,3,5-triazin-2(1h)-one 0.714 32 5AT 5'-amino-5'-deoxythymidine 0.714 33 CTD 3-deazacytidine 0.714 34 I5A 5'-deoxy-5'-iodocytidine 0.714 35 ID2 5-iododeoxyuridine 0.714 36 TYU Tetrahydrouridine 0.714 37 U33 5-bromo-2'-deoxy uridine 0.714 38 URI Uridine 0.714 39 WUV 5'-thiothymidine 0.714 40 ZEB 4-hydroxy-3,4-dihydro-zebularine 0.714 41 10C 4-amino-1-{2,5-anhydro-4-[(phosphonooxy)methyl]-alpha-L-lyxofuranosyl}pyrimidin-2(1h)-one 0.708 42 3TC 4-amino-1-[(2r,5s)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1h)-one 0.700 43 DDU 2'-5'dideoxyuridine 0.700 44 LTT 4-amino-1-[(2s,4s)-2-(hydroxymethyl)-1,3-dioxolan-4-yl]pyrimidin-2(1h)-one 0.700