1 Q07 [(1r,2s)-1-amino-2-methylpentyl]phosphonic acid 1.000 2 NLP (1-amino-pentyl)-phosphonic acid 0.909 3 Q08 [(1r)-1-amino-2-propylpentyl]phosphonic acid 0.846 4 PVA 1-amino-2-methyl-propylphosphonic acid 0.818 5 2WW [(1s)-1-amino-3-methylbutyl]phosphonic acid 0.750 6 PLU Leucine phosphonic acid 0.750 7 3V2 [(1r)-1-aminopropyl]phosphonic acid 0.727 8 CCP Butylphosphonate 0.727