1	CYX	(3-formyl-but-3-enyl)-phosphonic acid	1.000
2	IPI	3-methylbutylphosphonic acid	0.900
3	2WW	[(1s)-1-amino-3-methylbutyl]phosphonic acid	0.818
4	PLU	Leucine phosphonic acid	0.818
5	CCP	Butylphosphonate	0.800
6	PSX	[(2s,3r,4s)-2,4-dihydroxy-3-methylhexyl]phosphonic acid	0.769
7	4PB	N-hydroxy-4-phosphono-butanamide	0.750
8	E7P	(2s)-2-amino-4-phosphonobutanoic acid	0.750
9	57H	Prop-2-en-1-ylphosphonic acid	0.700