Fullerenols, water-soluble polihydroxylated fullerenes, are very important kinds of fullerene derivatives because it is suitable for biological study. In order to get convenient substance for studies (in vivo and in vitro) we investigate possibilities of labeling fullerenol. The HPLC results performed by isocratic HPLC, confirmed that hydrophilic organometallic [99mTc(CO)3(H2O)3]+ precursor allows forming of 99mTc(I) complexes with fullerenol.Physical chemistry 2004 : 7th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 21-23 September 200