3.4.17.21	0.00000006	-	(S)-2-(3-((S)-1-carboxy-(4-iodobenzamido)pentyl)ureido)pentanedioic acid	-	699452	
3.4.17.21	0.0000001	-	(2S)-2-[[(2-[4-[(tert-butoxycarbonyl)amino]phenyl]ethoxy)(hydroxy)phosphoryl]methyl]pentanedioic acid	-	683948	
3.4.17.21	0.0000001	-	(S)-2-(phosphonomethyl)-pentanedioic acid	more potent than the R-isomer, IC50: 0.0000001 mM	669776	
3.4.17.21	0.0000002	-	(2S)-2-([hydroxy[2-(4-hydroxyphenyl)ethoxy]phosphoryl]methyl)pentanedioic acid	-	683948	
3.4.17.21	0.0000003	-	2-(phosphonomethyl)pentanedioic acid	IC50: 0.3 nM	656455	
3.4.17.21	0.0000004	-	2-(phosphonomethyl)pentanedioic acid	-	683948	
3.4.17.21	0.0000005	-	(S)-2-(3-((S)-1-carboxy-2-(4-hydroxy-3-iodophenyl)ethyl)ureido)pentanedioic acid	-	699452	
3.4.17.21	0.0000005	-	2-[[(2,4-dicarboxybutyl)(hydroxy)phosphoryl]methyl]pentanedioic acid	IC50: 0.5 nM	656455	
3.4.17.21	0.00000068	-	S-2-((2-(S-4-amino-4-carboxybutanamido)-S-2-carboxyethoxy)-hydroxyphosphorylamino)-pentanedioic acid	-	709648	
3.4.17.21	0.0000007	-	(2S)-2-([[2-(4-[[N-(tert-butoxycarbonyl)glycyl]amino]phenyl)ethoxy](hydroxy)phosphoryl]methyl)pentanedioic acid	-	683948