Institution: | a Research Group for Alkaloid Chemistry of the Hungarian Academy of Sciences, PO Box 91, H-1521 Budapest, Hungary b Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary c Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary d Research Group of Technical Analytical Chemistry of the Hungarian Academy of Sciences, PO Box 91, H-1521 Budapest, Hungary e Chinoin Pharmaceutical and Chemical Works Ltd., PO Box 110, H-1325 Budapest, Hungary |