Previous studies have shown that some thiosemicarbazones have antitumor activity as inhibitors of ribonucleotide reductase and their reactivity can be enhanced by coordination to Ru ion. The following paper describes the synthesis of N,N-p-dimethylaminbenzaldehyde thiosemicarbazone and its Ru(II) complex. In addition, the interaction of the obtained compounds with albumin was carried out using fluorescence spectroscopy. It has been shown that coordination of ligand to ruthenium decrease its reactivity towards albumin and therefore the better bioavailability is expected.