1	6AP	9h-purine-2,6-diamine	1.000
2	W5M	9-methyl-9h-purine-2,6-diamine	0.917
3	2BP	9h-purin-2-amine	0.909
4	ADE	Adenine	0.909
5	3MA	6-amino-3-methylpurine	0.833
6	6GU	6-chloroguanine	0.833
7	A2F	2-fluoroadenine	0.833
8	ADK	3-methyl-3h-purin-6-ylamine	0.833
9	ADZ	9-methyl-9h-purin-6-amine	0.833
10	DX4	2-amino-1,9-dihydro-6h-purine-6-thione	0.833
11	GUN	Guanine	0.833
12	HH5	6-iodanyl-7~{H}-purin-2-amine	0.833
13	IGA	6-amino-3,7-dihydro-2h-purin-2-one	0.833
14	KB5	6-azanyl-9~{H}-purine-8-thiol	0.833
15	M1A	6-amino-1-methylpurine	0.833
16	Q88	9h-purine-6,8-diamine	0.833
17	YH7	6-amino-1,9-dihydro-2h-purine-2-thione	0.833
18	29G	Pyrimido[4,5-D]pyrimidine-2,4-diamine	0.769
19	2EC	9-ethyl-9h-purin-6-ylamine	0.769
20	39A	6-amino-3,9-dimethyl-9h-purin-3-ium	0.769
21	6GO	6-O-methylguanine	0.769
22	8IG	8-iodo-guanine	0.769
23	8WT	8-methylsulfanyl-7~{H}-purin-6-amine	0.769
24	9MG	9-methylguanine	0.769
25	ANG	8-aminoguanine	0.769
26	B55	2-amino-8-sulfanyl-1,9-dihydro-6h-purin-6-one	0.769
27	BRG	8-bromoguanine	0.769
28	MY6	2-amino-7-methyl-1,7-dihydro-6h-purin-6-one	0.769
29	OXG	8-oxoguanine	0.769
30	6MP	6-methylpurine	0.750
31	9DA	9-deazaadenine	0.750
32	BP1	6-bromo-7h-purine	0.750
33	ES4	6-chloro-9h-purine	0.750
34	HPA	Hypoxanthine	0.750
35	PM6	9h-purine-6-thiol	0.750
36	LG3	Pyrimidine-2,4-diamine	0.727
37	JXN	8-bromanyl-9-ethyl-purin-6-amine	0.714
38	JY8	9-ethyl-8-methyl-purin-6-amine	0.714
39	NDM	7,9-dimethylguanine	0.714