1	5UD	5-fluorouridine	1.000
2	TYU	Tetrahydrouridine	0.944
3	URI	Uridine	0.944
4	ZEB	4-hydroxy-3,4-dihydro-zebularine	0.944
5	38T	5-methyluridine	0.895
6	F01	4-amino-1-[(2r,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-fluoro-pyrimidin-2-one	0.895
7	UUA	Uridine uronic acid	0.895
8	D3Z	1-(5-deoxy-beta-L-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.889
9	DHZ	3,4-dihydro-1h-pyrimidin-2-one nucleoside	0.889
10	DUR	2'-deoxyuridine	0.889
11	THU	Tetrahydrodeoxyuridine	0.889
12	U4P	5'-deoxyuridine	0.889
13	ZE8	Zebularine	0.889
14	2TU	1-(beta-D-ribofuranosyl)-2-thioxo-2,3-dihydropyrimidin-4(1h)-one	0.842
15	AR3	Cytarabine	0.842
16	B86	2'-deoxy-5-fluorocytidine	0.842
17	CTN	4-amino-1-beta-D-ribofuranosyl-2(1h)-pyrimidinone	0.842
18	ID2	5-iododeoxyuridine	0.842
19	LLT	L-deoxythymidine	0.842
20	THM	Thymidine	0.842
21	U33	5-bromo-2'-deoxy uridine	0.842
22	URD	1-((2r,3r,4s,5r)-tetrahydro-3,4-dihydroxy-5-(hydroxymethyl)furan-2-yl)pyridine-2,4(1h,3h)-dione	0.842
23	DDU	2'-5'dideoxyuridine	0.833
24	3DT	3-methylthymidine	0.800
25	5HT	5-hydroxy-thymidine	0.800
26	EDU	2'-deoxy-5-ethynyluridine	0.800
27	RDD	1-beta-D-ribofuranosyl-1,3,5-triazinane-2,4,6-trione	0.800
28	U56	N-hydroxycytidine	0.800
29	U7I	2'-deoxy-2'-fluoro-2'-methyluridine	0.800
30	Y7U	2',2'-difluorodeoxyuridine	0.800
31	YC6	1-(2-deoxy-alpha-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1h,3h)-dione	0.800
32	38S	1-[(2r,5s)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione	0.789
33	ANU	2,2'-anhydro-(1-beta-D-arabinofuranosyl)uracil	0.789
34	BJE	2,2'-anhydro-(1-beta-D-ribofuranosyl)uracil	0.789
35	DCZ	2'-deoxycytidine	0.789
36	LDC	4-amino-1-(2-deoxy-beta-L-erythro-pentofuranosyl)pyrimidin-2(1h)-one	0.789
37	S7W	Tegafur	0.778
38	UD5	5-fluorouridine	0.773
39	BVD	5-bromovinyldeoxyuridine	0.762
40	EDV	1-(2-deoxy-2-methyl-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione	0.762
41	FDU	1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-ethynylpyrimidine-2,4(1h,3h)-dione	0.762
42	UZ0	2'-azido-2'-deoxyuridine	0.762
43	0DN	5'-deoxy-5'-fluorothymidine	0.750
44	5AE	4-amino-1-(beta-D-ribofuranosyl)-1,3,5-triazin-2(1h)-one	0.750
45	5AT	5'-amino-5'-deoxythymidine	0.750
46	5BT	5-bromo-2'-deoxycytidine	0.750
47	BRD	1-beta-ribofuranosyl-1,3-diazepinone	0.750
48	CTD	3-deazacytidine	0.750
49	I5A	5'-deoxy-5'-iodocytidine	0.750
50	MCY	5-methyl-2'-deoxycytidine	0.750
51	TQR	4-azanyl-1-[(2~{R},3~{R},4~{S},5~{R})-5-(hydroxymethyl)-3,4-bis(oxidanyl)thiolan-2-yl]pyrimidin-2-one	0.750
52	WUV	5'-thiothymidine	0.750
53	5FU	5-fluoro-uridine-5'-monophosphate	0.739
54	A1EHT	N4-acetylcytidine	0.727
55	ADU	3'-deoxy-3'-acetamido-uridine	0.727
56	DK4	1-(3-deoxy-3-fluoro-beta-D-glucopyranosyl)-5-fluoropyrimidine-2,4(1h,3h)-dione	0.727
57	F2U	2'-deoxy-5-ethynyl-2',2'-difluorouridine	0.727
58	GPK	5-fluoro-1-(beta-D-glucopyranosyl)pyrimidine-2,4(1h,3h)-dione	0.727
59	P0C	6-methyl-3-(beta-D-ribofuranosyl)-3,7-dihydro-2h-pyrrolo[2,3-D]pyrimidin-2-one	0.727
60	AHU	1',5'-anhydro-2',3'-dideoxy-2'-(5-iodouracil-1-yl)-D-ababino-hexitol	0.714
61	GEO	Gemcitabine	0.714
62	SCT	(south)-methanocarba-thymidine	0.714
63	TCP	5'-methylthymidine	0.714
64	TMC	1-[4-hydroxy-5-(hydroxymethyl)bicyclo[3.1.0]hex-2-yl]-5-methylpyrimidine-2,4(1h,3h)-dione	0.714
65	TV0	4-azanyl-1-[(2~{R},3~{R},4~{S},5~{S})-5-(hydroxymethyl)-3,4,5-tris(oxidanyl)thiolan-2-yl]pyrimidin-2-one	0.714
66	UZL	O2'-methylycytidine	0.714
67	VVC	4-azanyl-1-[(2~{R},4~{S},5~{R})-5-ethynyl-5-(hydroxymethyl)-4-oxidanyl-oxolan-2-yl]pyrimidin-2-one	0.714
68	FMU	5-fluoro-5-methyluridine-5'-monophosphate	0.708
69	FNU	6-amino-5-fluorouridine 5'-(dihydrogen phosphate)	0.708
70	ETV	4-amino-5-fluoro-1-[(2r,5s)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1h)-one	0.700