1	NRD	(6-azanyl-1-oxidanyl-1-phosphono-hexyl)phosphonic acid	1.000
2	028	(1-hydroxyheptane-1,1-diyl)bis(phosphonic acid)	0.882
3	252	(1-hydroxynonane-1,1-diyl)bis(phosphonic acid)	0.789
4	212	Alendronate	0.765
5	AHD	4-amino-1-hydroxybutane-1,1-diyldiphosphonate	0.765
6	210	Pamidronate	0.706