1	787	(phenyl-phosphono-methyl)-phosphonic acid	1.000
2	RD2	[(6-hydroxynaphthalen-2-yl)methylene]bis(phosphonic acid)	0.750
3	RD3	{[4-(phosphonooxy)phenyl]methylene}bis(phosphonic acid)	0.750
4	B85	Benzylphosphonic acid	0.733
5	11P	[(7r)-6,7-dihydro-5h-cyclopenta[C]pyridin-7-yl(hydroxy)methylene]bis(phosphonic acid)	0.700