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Dependence pf the radiochemical incorporation yield (RCIY) of [11C]harmine (n≥2) on (A) amount of 5 M NaOH (@ 1 mg/mL precursor, 2 min), (B) precursor concentration (@ 80 °C, 2 min), (C) reaction temperature (@ 2 mg/mL precursor, 2 min) and (D) reaction time (@ 2 mg/mL precursor, 25 °C). If not visible, error bars are within the margin of the symbols.
