1 34F (1s)-1-(3,4-dichlorophenyl)-3-[formyl(hydroxy)amino]propyl}phosphonic acid 1.000 2 DCV [(1r)-3-[acetyl(hydroxy)amino]-1-(3,4-dichlorophenyl)propyl]phosphonic acid 0.950 3 FM5 3-(N-hydroxyacetamido)-1-(3,4-dichlorophenyl)propylphosphonic acid 0.950 4 FOB [(1r)-3-[acetyl(hydroxy)amino]-1-(pyridin-4-yl)propyl]phosphonic acid 0.762 5 FOQ [(1s)-3-[acetyl(hydroxy)amino]-1-(pyridin-4-yl)propyl]phosphonic acid 0.762 6 FM6 [(1s)-1-(3,4-dichlorophenyl)-3-[oxidanyl(phenylcarbonyl)amino]propyl]phosphonic acid 0.760