1	L60	1,3-diazinan-2-one	1.000
2	71O	Pyrimidin-2-ol	1.000
3	CYT	6-aminopyrimidin-2(1h)-one	0.875
4	DJP	5-fluoropyrimidin-2-ol	0.875
5	DUC	Dihydropyrimidine-2,4(1h,3h)-dione	0.875
6	HPY	4-hydroxy-3,4-dihydro-1h-pyrimidin-2-one	0.875
7	LDB	4-thiouracil	0.875
8	OS0	4-oxidanyl-3,4-dihydro-1h-pyrimidin-2-one	0.875
9	URA	Uracil	0.875
10	P1R	Pyrimidine	0.857
11	17E	5-methylcytosine	0.778
12	1LD	5-fluorocytosine	0.778
13	1MC	1-methylcytosine	0.778
14	3MC	3-methylcytosine	0.778
15	5UC	5-chloropyrimidine-2,4(1h,3h)-dione	0.778
16	6MU	6-methylpyrimidine-2,4-diol	0.778
17	6UA	6-aminopyrimidine-2,4(3h,5h)-dione	0.778
18	BR8	Barbituric acid	0.778
19	FPY	(4s)-5-fluoro-4-hydroxy-3,4-dihydropyrimidin-2(1h)-one	0.778
20	IDH	(5s)-5-iododihydro-2,4(1h,3h)-pyrimidinedione	0.778
21	IUR	5-iodouracil	0.778
22	ODF	5-oxidanyl-1~{H}-pyrimidine-2,4-dione	0.778
23	TDR	Thymine	0.778
24	URB	5-bromopyrimidine-2,4(1h,3h)-dione	0.778
25	URF	5-fluorouracil	0.778
26	WBU	5-amino-1h-pyrimidine-2,4-dione	0.778
27	XH5	(5s)-5-methyl-1,3-diazinane-2,4-dione	0.778
28	93B	1,3-diazinane-2-thione	0.750
29	HGW	5-iodanylpyrimidine	0.750
30	HHN	5-bromanylpyrimidine	0.750
31	HRZ	1~{H}-pyridin-2-one	0.750
32	LGA	Pyrimidin-2-amine	0.750
33	T5V	Pyrimidin-5-amine	0.750
34	T5Y	Pyridin-2-ol	0.750
35	V1L	Piperidin-2-one	0.750
36	W3J	1,4,5,6-tetrahydropyrimidin-2-amine	0.750
37	FOU	(5s,6r)-5-fluoro-6-hydroxydihydropyrimidine-2,4(1h,3h)-dione	0.700
38	FYU	2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde	0.700
39	HMU	5-hydroxymethyl uracil	0.700
40	I3V	5-azanyl-6-methyl-1~{H}-pyrimidine-2,4-dione	0.700
41	I6R	6-ethyl-1h-pyrimidine-2,4-dione	0.700
42	IGX	6-methoxy-1h-pyrimidine-2,4-dione	0.700
43	JFD	6-amino-5-bromo-1,2,3,4-tetrahydropyrimidine-2,4-dione	0.700
44	LXN	Alloxan	0.700
45	S76	6-(methylamino)-1h-pyrimidine-2,4-dione	0.700
46	TJJ	2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.700
47	URN	5,6-diaminopyrimidine-2,4(1h,3h)-dione	0.700
48	W8W	5-bromo-1-methylpyrimidine-2,4(1h,3h)-dione	0.700
49	Y3G	5-ethynylpyrimidine-2,4(1h,3h)-dione	0.700