Table 2. pCu2+ Values for the Cupric Complexes Formed by DO4S, DO3S, DO3SAm, DO2A2S, and Select State-of-the-Art 64/67Cu2+ Ligandsa.
pCu2+ |
|||
---|---|---|---|
ligand | pH 4.0 | pH 6.0 | pH 7.4 |
DO4S | 9.3 | 11.3 | 17.7 |
DO3S | 8.9 | 10.9 | 17.5 |
DO3SAm | 8.5 | 10.5 | 17.2 |
DO2A2S | 10.1 | 12.5 | 19.4 |
DOTA | 7.6 | 9.8 | 17.4 |
NOTA | 10.9 | 13.0 | 18.2 |
TETA | 7.3 | 9.6 | 16.2 |
Cyc4Me | 7.3 | 11.3 | 14.1 |