1	9PP	2,6-diamino-(S)-9-[2-(phosphonomethoxy)propyl]purine	1.000
2	TFO	[2-(6-amino-9h-purin-9-yl)-1-methylethoxy]methylphosphonic acid	0.950
3	5HG	{[2-(6-amino-9h-purin-9-yl)ethoxy]methyl}phosphonic acid	0.900
4	24H	{[(1s)-2-(2-amino-6-oxo-1,6-dihydro-9h-purin-9-yl)-1-(hydroxymethyl)ethoxy]methyl}phosphonic acid	0.864
5	TNM	[(2r)-1-(6-aminopurin-9-yl)propan-2-yl]oxymethyl-phosphonooxy-phosphinic acid	0.720