1 AE1 2-{[[(1s)-1-amino-2-carboxyethyl](dihydroxy)phosphoranyl]methyl}-4-methylpentanoic acid 1.000 2 AEP 3-[(1-amino-2-carboxy-ethyl)-hydroxy-phosphinoyl]-2-methyl-propionic acid 0.833 3 BHX (2s)-2-{[(S)-(2-carboxyethyl)(hydroxy)phosphoryl]methyl}pentanedioic acid 0.800