1	714	1-(2,2-diphosphonoethyl)-3-(octyloxy)pyridinium	1.000
2	722	1-(2,2-diphosphonoethyl)-3-(heptyloxy)pyridinium	0.960
3	B71	3-(decyloxy)-1-(2,2-diphosphonoethyl)pyridinium	0.926
4	721	3-butoxy-1-(2,2-diphosphonoethyl)pyridinium	0.840
5	H86	3-(decyloxy)-5-(3,5-difluorophenyl)-1-(2,2-diphosphonoethyl)pyridinium	0.714