1. Department of Organic Chemistry University of Pannonia Egyetem u. 10. P.O.Box 158) H-8200 Veszprém Hungary
2. Department of Biochemistry and Medical Chemistry University of Pécs, Medical School Szigeti út 12, H-7624 Pécs Hungary
3. Research Centre for Natural Sciences Eötvös Loránd Research Network Magyar tudósok körútja 2. H-1117 Budapest Hungary
4. Chemical Works of Gedeon Richter Plc. Gyömrői út 19–21 Hungary