Table 11.
Binding constants for the complexes of 187 with different amino acids.
| Amino acid (dihydrochlorides) | Kass [M−1] (methanol) | Kass [M−1] (water) | Receptor: guest stoichiometry |
| His | 29000 | 650 | 1:2 |
| Orn | 9500 | 221 | 1:2 |
| Arg | 8800 | 165 | 1:2 |
| Lys | 21000 | 1200 | 1:1 |