1	IJZ	5-amino-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	1.000
2	DOR	(4s)-2,6-dioxohexahydropyrimidine-4-carboxylic acid	0.917
3	OG6	6-[bis(oxidanyl)methyl]-5~{H}-pyrimidine-2,4-dione	0.917
4	ORO	Orotic acid	0.917
5	FOT	5-fluoro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.846
6	HRO	5-chloro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.846
7	IRO	5-iodo-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.846
8	RRO	5-bromo-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.846
9	I3V	5-azanyl-6-methyl-1~{H}-pyrimidine-2,4-dione	0.833
10	TJJ	2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.833
11	ERO	5-ethenyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.786
12	D1X	2,6-dioxo-1,2,3,6-tetrahydropyridine-4-carboxylic acid	0.769
13	IGT	5-azanyl-3,6-dimethyl-1h-pyrimidine-2,4-dione	0.769
14	IHF	5-azanyl-6-ethyl-1h-pyrimidine-2,4-dione	0.769
15	OXC	Oxonic acid	0.769
16	TEV	6-methyl-2-oxo-2,5-dihydropyrimidine-4-carboxylic acid	0.769
17	6MU	6-methylpyrimidine-2,4-diol	0.750
18	WBU	5-amino-1h-pyrimidine-2,4-dione	0.750
19	EJZ	5-nitro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.733
20	TJ4	5,6-dimethyl-2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.714