1	OTD	2-oxo-1,2,3,6-tetrahydropyrimidine-4,6-dicarboxylic acid	1.000
2	TEV	6-methyl-2-oxo-2,5-dihydropyrimidine-4-carboxylic acid	0.846
3	PD2	Pyridine-2,4-dicarboxylic acid	0.786
4	TJ4	5,6-dimethyl-2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.786
5	TJJ	2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.769
6	U4B	3-fluoranylpyridine-2,4-dicarboxylic acid	0.733
7	U4Q	5-fluoranylpyridine-2,4-dicarboxylic acid	0.733
8	DOR	(4s)-2,6-dioxohexahydropyrimidine-4-carboxylic acid	0.714
9	OG6	6-[bis(oxidanyl)methyl]-5~{H}-pyrimidine-2,4-dione	0.714
10	ORO	Orotic acid	0.714