1	S76	6-(methylamino)-1h-pyrimidine-2,4-dione	1.000
2	DUC	Dihydropyrimidine-2,4(1h,3h)-dione	0.800
3	HPY	4-hydroxy-3,4-dihydro-1h-pyrimidin-2-one	0.800
4	OS0	4-oxidanyl-3,4-dihydro-1h-pyrimidin-2-one	0.800
5	URA	Uracil	0.800
6	5UC	5-chloropyrimidine-2,4(1h,3h)-dione	0.727
7	6MU	6-methylpyrimidine-2,4-diol	0.727
8	6UA	6-aminopyrimidine-2,4(3h,5h)-dione	0.727
9	BR8	Barbituric acid	0.727
10	FPY	(4s)-5-fluoro-4-hydroxy-3,4-dihydropyrimidin-2(1h)-one	0.727
11	IDH	(5s)-5-iododihydro-2,4(1h,3h)-pyrimidinedione	0.727
12	IUR	5-iodouracil	0.727
13	ODF	5-oxidanyl-1~{H}-pyrimidine-2,4-dione	0.727
14	TDR	Thymine	0.727
15	URB	5-bromopyrimidine-2,4(1h,3h)-dione	0.727
16	URF	5-fluorouracil	0.727
17	WBU	5-amino-1h-pyrimidine-2,4-dione	0.727
18	XH5	(5s)-5-methyl-1,3-diazinane-2,4-dione	0.727
19	71O	Pyrimidin-2-ol	0.700
20	L60	1,3-diazinan-2-one	0.700