Abstract [76 Br] bromocaramiphen was prepared from the iodo-analogue by a Cu+ nucleophilic bromodeiodination exchange. The radiolabelling yield was 40–45%. The radiochemical and chemical purities assessed by radio-TLC and HPLC were 98%. The precursor, iodocaramiphen, was synthesized from commercially available 1- phenylcyclopentanecarboxylic acid with a 10% overall yield in a 5 step procedure. This ...