Synthesis of I-131 labelled 4-iodophenylacetic acid

Phenylacetate has been reported to have a potent anti-proliferative and anti-differentiating effect in haematological malignancies and in solid tumours at non-toxic concentrations. This study is a preliminary investigation into the potential of 4-iodophenylacetic acid radiolabelled by 131I as a radiopharmaceutical equivalent. The radiolabelling by isotope exchange gave a radiochemical yield of 53±6%, and a radiochemical purity of 97.8±1.2% as qualified by HPLC. The product contained 4% ester by-product and is suitable for studies in animals. © 2010 John Wiley & Sons, Ltd.