1	ADZ	9-methyl-9h-purin-6-amine	1.000
2	2EC	9-ethyl-9h-purin-6-ylamine	0.917
3	39A	6-amino-3,9-dimethyl-9h-purin-3-ium	0.917
4	W5M	9-methyl-9h-purine-2,6-diamine	0.917
5	ADE	Adenine	0.909
6	JXN	8-bromanyl-9-ethyl-purin-6-amine	0.846
7	JY8	9-ethyl-8-methyl-purin-6-amine	0.846
8	3MA	6-amino-3-methylpurine	0.833
9	6AP	9h-purine-2,6-diamine	0.833
10	8G8	2-chloranyl-9-methyl-purine	0.833
11	A2F	2-fluoroadenine	0.833
12	ADK	3-methyl-3h-purin-6-ylamine	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	W4S	7-methyl-7h-pyrrolo[2,3-D]pyrimidin-4-amine	0.833
18	YH7	6-amino-1,9-dihydro-2h-purine-2-thione	0.833
19	WUT	9~{H}-purine	0.818
20	APS	9-hydroxypropyladenine, S-isomer	0.786
21	ARP	9-hydroxypropyladenine, R-isomer	0.786
22	JXW	9-(2-chloroethyl)-8-methyl-purin-6-amine	0.786
23	JXZ	2-(6-azanyl-8-methyl-purin-9-yl)ethanol	0.786
24	JYB	9-ethyl-8-ethynyl-purin-6-amine	0.786
25	8WT	8-methylsulfanyl-7~{H}-purin-6-amine	0.769
26	9MG	9-methylguanine	0.769
27	OYK	~{N},9-dimethylpurin-6-amine	0.769
28	2BP	9h-purin-2-amine	0.750
29	6MP	6-methylpurine	0.750
30	9DA	9-deazaadenine	0.750
31	BP1	6-bromo-7h-purine	0.750
32	ES4	6-chloro-9h-purine	0.750
33	HPA	Hypoxanthine	0.750
34	PM6	9h-purine-6-thiol	0.750
35	JXK	9-(3-azanylpropyl)-8-bromanyl-purin-6-amine	0.733
36	JYT	3-(6-azanyl-8-bromanyl-purin-9-yl)propan-1-ol	0.733
37	IT6	2-chloranyl-~{N},9-dimethyl-purin-6-amine	0.714
38	MUA	9-methyl uric acid	0.714
39	NDM	7,9-dimethylguanine	0.714
40	UAN	9-methyl-2-(methylamino)-1h-purin-6-one	0.714