1	UAN	9-methyl-2-(methylamino)-1h-purin-6-one	1.000
2	IF3	~{N}2,~{N}6,9-trimethylpurine-2,6-diamine	0.800
3	Q44	N-(6-oxo-6,9-dihydro-3h-purin-2-yl)acetamide	0.800
4	9MG	9-methylguanine	0.786
5	HPA	Hypoxanthine	0.769
6	MUA	9-methyl uric acid	0.733
7	NDM	7,9-dimethylguanine	0.733
8	2ON	2-sulfanyl-1,9-dihydro-6h-purin-6-one	0.714
9	8G8	2-chloranyl-9-methyl-purine	0.714
10	ADZ	9-methyl-9h-purin-6-amine	0.714
11	BOA	2-bromo-6-hydroxy-purine	0.714
12	GUN	Guanine	0.714
13	XAN	Xanthine	0.714