1	2BP	9h-purin-2-amine	1.000
2	6AP	9h-purine-2,6-diamine	0.909
3	6GU	6-chloroguanine	0.909
4	DX4	2-amino-1,9-dihydro-6h-purine-6-thione	0.909
5	GUN	Guanine	0.909
6	HH5	6-iodanyl-7~{H}-purin-2-amine	0.909
7	6GO	6-O-methylguanine	0.833
8	8IG	8-iodo-guanine	0.833
9	9MG	9-methylguanine	0.833
10	ANG	8-aminoguanine	0.833
11	B55	2-amino-8-sulfanyl-1,9-dihydro-6h-purin-6-one	0.833
12	BRG	8-bromoguanine	0.833
13	MY6	2-amino-7-methyl-1,7-dihydro-6h-purin-6-one	0.833
14	OXG	8-oxoguanine	0.833
15	W5M	9-methyl-9h-purine-2,6-diamine	0.833
16	6MP	6-methylpurine	0.818
17	ADE	Adenine	0.818
18	BP1	6-bromo-7h-purine	0.818
19	ES4	6-chloro-9h-purine	0.818
20	HPA	Hypoxanthine	0.818
21	PM6	9h-purine-6-thiol	0.818
22	NDM	7,9-dimethylguanine	0.769
23	06K	2,6-bis(chloranyl)-7h-purine	0.750
24	290	6-methyl-3,9-dihydro-2h-purin-2-one	0.750
25	2ON	2-sulfanyl-1,9-dihydro-6h-purin-6-one	0.750
26	3MA	6-amino-3-methylpurine	0.750
27	7DG	7-deazaguanine	0.750
28	8G8	2-chloranyl-9-methyl-purine	0.750
29	9DG	9-deazaguanine	0.750
30	A2F	2-fluoroadenine	0.750
31	ADK	3-methyl-3h-purin-6-ylamine	0.750
32	ADZ	9-methyl-9h-purin-6-amine	0.750
33	AZG	5-amino-1h-[1,2,3]triazolo[4,5-D]pyrimidin-7-ol	0.750
34	BCP	2-bromo-6-chloro-purine	0.750
35	BOA	2-bromo-6-hydroxy-purine	0.750
36	CFP	6-chloro-2-fluoropurine	0.750
37	IGA	6-amino-3,7-dihydro-2h-purin-2-one	0.750
38	KB5	6-azanyl-9~{H}-purine-8-thiol	0.750
39	M1A	6-amino-1-methylpurine	0.750
40	N6M	N-methyl-9h-purin-6-amine	0.750
41	Q88	9h-purine-6,8-diamine	0.750
42	QY8	2-amino-3h,4h,7h-pyrrolo[2,3-D]pyrimidin-4-one	0.750
43	SZL	6-methoxy-9h-purine	0.750
44	XAN	Xanthine	0.750
45	XQG	6-methylsulfanyl-9h-purine	0.750
46	YH7	6-amino-1,9-dihydro-2h-purine-2-thione	0.750
47	WOY	6,7-dihydro-5h-pyrrolo[2,3-D]pyrimidine	0.727
48	LGA	Pyrimidin-2-amine	0.700
49	W3J	1,4,5,6-tetrahydropyrimidin-2-amine	0.700