1	T5V	Pyrimidin-5-amine	1.000
2	938	4-chloranylpyrimidin-5-amine	0.875
3	P1R	Pyrimidine	0.857
4	WBU	5-amino-1h-pyrimidine-2,4-dione	0.778
5	3AP	3-aminopyridine	0.750
6	71O	Pyrimidin-2-ol	0.750
7	93B	1,3-diazinane-2-thione	0.750
8	HGW	5-iodanylpyrimidine	0.750
9	HHN	5-bromanylpyrimidine	0.750
10	L60	1,3-diazinan-2-one	0.750
11	LGA	Pyrimidin-2-amine	0.750
12	W3J	1,4,5,6-tetrahydropyrimidin-2-amine	0.750
13	0FU	2,5,6-triaminopyrimidin-4-ol	0.700
14	DDP	2,4-diamino-4,6-dihydroxypyrimidine	0.700
15	I3V	5-azanyl-6-methyl-1~{H}-pyrimidine-2,4-dione	0.700
16	URN	5,6-diaminopyrimidine-2,4(1h,3h)-dione	0.700