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Model radiolabeling reaction using precursor 2 to form [18F]3. (A) Reaction scheme. (B) Results from initial screening of different elution conditions at 120 °C and 5 min in MeCN. Concentration range = 2–200 μmol of eluting anion depending on elution efficiency with preconditioning anions in brackets. A higher EE correlates to a higher eluting anion concentration. Detailed information is provided in Table S2.
