1	1RN	(E)-N-{[4-oxo-1-(5-O-phosphono-beta-D-arabinofuranosyl)-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl]methylidene}glycine	1.000
2	A1L3P	5-carboxymethylaminomethyluridine	0.929
3	U8U	5-methylaminomethyl-2-thiouridine-5'-monophosphate	0.889
4	MNU	(2r,4s)-1-[(4r)-3,4-dihydroxytetrahydrofuran-2-yl]-5-[(methylamino)methyl]-1,2,3,4-tetrahydropyrimidine-2,4-diol-5'-mon ophosphate	0.821
5	A1I9V	5-methyl-2-thio-uridine-5'-monophosphate	0.815
6	A1AAZ	2-thio-thymidine	0.778
7	SUR	1-(beta-D-ribofuranosyl)-2-thio-uracil-5'-phosphate	0.778
8	5MU	5-methyluridine 5'-monophosphate	0.750
9	TM2	5-{[(2-sulfoethyl)amino]methyl}uridine 5'-(dihydrogen phosphate)	0.750
10	UBI	2'-deoxy-5-[(2-methylpropyl)carbamoyl]uridine 5'-(dihydrogen phosphate)	0.742
11	9V9	1-{2,5-anhydro-4-[(phosphonooxy)methyl]-alpha-L-lyxofuranosyl}-5-methyl-2-sulfanylidene-2,3-dihydropyrimidin-4(1h)-one	0.724
12	A1BBB	5-(hydroxymethyl)uridine 5'-(dihydrogen phosphate)	0.724
13	CNU	5-cyano-uridine-5'-monophosphate	0.724
14	FMU	5-fluoro-5-methyluridine-5'-monophosphate	0.724
15	0DT	2'-deoxy-L-ribo-furanosyl thymidine-5'-monophosphate	0.714
16	0U	L-uridine-5'-monophosphate	0.714
17	6F7	3'-deoxy-5-methyluridine 5'-(dihydrogen phosphate)	0.714
18	8XU	1-(5-O-phosphono-beta-D-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.714
19	DT	Thymidine-5'-monophosphate	0.714
20	H2U	5,6-dihydrouridine-5'-monophosphate	0.714
21	IC	Isocytidine-5'-monophosphate	0.714
22	IMC	N1-[2-deoxy-ribofuranosyl]-[2-amino-5-methyl-4-oxo-4h-pyrimidine]-5'-monophosphate	0.714
23	MUM	5'-O-(dihydroxyphosphanyl)-5-methyl-5,6-dihydrouridine	0.714
24	PBT	[3-hydroxy-5-(5-methyl-2,4-dioxotetrahydro-1(2h)-pyrimidinyl)tetrahydro-2-furanyl]methyl dihydrogen phosphate	0.714
25	QBT	[(2r,3s,5r)-3-hydroxy-5-[(5s)-5-methyl-2,4-dioxo-1,3-diazinan-1-yl]oxolan-2-yl]methyl dihydrogen phosphate	0.714
26	RSP	4-amino-1-(5-O-phosphono-beta-D-ribofuranosyl)pyrimidine-2(1h)-thione	0.714
27	RUS	1-(5-O-phosphono-beta-D-ribofuranosyl)-2-selanylpyrimidin-4(1h)-one	0.714
28	TMP	Thymidine-5'-phosphate	0.714
29	U	Uridine-5'-monophosphate	0.714
30	U5P	Uridine-5'-monophosphate	0.714
31	UAR	Uracil arabinose-5'-phosphate	0.714
32	US3	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-5-methyl-2-selanylpyrimidin-4(1h)-one	0.714
33	70U	5-(O-methylaceto)-2-thio-2-deoxy-uridine-5'-monophosphate	0.710
34	Y5P	1-(5-O-phosphono-beta-D-ribofuranosyl)-1,4-dihydropyrimidine	0.704