1	UPV	2'-O-{[(2,2-dimethylpropanoyl)oxy]methyl}uridine 5'-(dihydrogen phosphate)	1.000
2	T38	2'-O-ethoxymethylene thymidine 5'-monophosphate	0.833
3	OMU	O2'-methyluridine 5'-monophosphate	0.759
4	XEC	1-(2-O-methyl-5-O-phosphono-beta-L-ribofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.759
5	2MU	2',5-dimethyluridine-5'-monophosphate	0.733
6	T41	1-(2-O-methyl-beta-D-arabinofuranosyl)thymidine 5'-monophosphate	0.733
7	UOA	[(2r,3s,4r,5r)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2h)-yl)-3-hydroxy-2,4-dimethoxytetrahydrofuran-2-yl]methyl dihydrogen phosphate (non-preferred name)	0.710
8	UOB	2'-ome,4'beta-ome uridine 5'-(dihydrogen phosphate)	0.710
9	OKT	2'-O-methyluridine-5'-phosphorothioate	0.700
10	OMC	O2'-methylycytidine-5'-monophosphate	0.700
11	XE6	4-amino-1-(2-O-methyl-5-O-phosphono-beta-L-ribofuranosyl)pyrimidin-2(1h)-one	0.700