1	UVP	1-[(5e)-5,6-dideoxy-2-O-methyl-6-phosphono-beta-D-ribo-hex-5-enofuranosyl]-2,4-dihydroxypyrimidin-1-ium	1.000
2	6OP	1-[(5e)-5,6-dideoxy-2-O-(2-methoxyethyl)-6-phosphono-beta-D-ribo-hex-5-enofuranosyl]-5-methylpyrimidine-2,4(1h,3h)-dione	0.846
3	U34	Uridine 5'-monomethylphosphate	0.833