Synthesis of non-radioactive rhenium complexes with quercetin compounds

Research on radiolabeled natural compounds are widely studied. Technetium-99m is a radioactive element used most in the labeling process as a radiotracer. Technetium is a decay result of Molybdenum-99 and is not available in nature. The investigations regarding the characterization of labelled compounds formed during the labelled process cannot be proven correct. This study aims to characterize the compounds formed from the synthesis process of quercetin compounds with rhenium. The use of rhenium as a substitute for technetium because they are in the same group and rhenium have its non-radioactive form. The complex of quercetin labelled rhenium characterized by the absorption at 202 nm and 370 nm wavelengths in the UV-VIS spectrophotometer. The complex formation optimum at pH 4. The physical properties of quercetin to re-quercetin with a color change from yellow to reddish-brown and the crystal form from spherulite to needle form. A significant difference in the Re-quercetin FTIR resulted in 428.2 cm-1 indicated the Re-0 strain in the Re-quercetin complex.