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Aim: In order to synthesize new efficient and low toxic metal-fluorouracil (5-FU) complexes anticancer drugs.Methods: Copper, iron, zinc salts and fluorouracil were used to synthesize copper, iron and zinc-fluorouracil complexes.Preliminary chemical structures of the 4 complexes were confirmed by elemental analysis and mass spectrometry.Their inhibitory activity on human cancer cells was measured by MTT colorimetric assay.