Methods
NOTA-CTHRSSVVC was diluted to 1.0 mg/mL in NaAcO buffer (0.2M; pH 4.0). In a vial containing 80 µL of peptide solution, was added 20 µL of AlCl3 solution (40mM) followed by 100-200 µL of [18F]fluoride solution (37-92.5 MBq).2 The reaction was heated at 90-100 °C for 10-20 min and analyzed by HPLC.