1 1OS [(R)-amino(4-carbamimidoylphenyl)methyl]phosphonic acid 1.000 2 Q02 [(R)-amino(phenyl)methyl]phosphonic acid 0.800 3 Q03 [(R)-amino(cyclohexyl)methyl]phosphonic acid 0.800 4 BOY [(R)-hydroxy(4-methylphenyl)methyl]phosphonic acid 0.750 5 00S 4-(aminomethyl)benzenecarboximidamide 0.733 6 B85 Benzylphosphonic acid 0.733