“…There are pub lished data on the complex formation of uracils with succinic, fumaric, ascorbic, and citric acids [2]; galac turonic acid [3]; apple pectin and products of its oxi dation [4]; and so on. Complexes of 6 methyluracil with succinic acid [5], 5 hydroxy 6 methyluracil with sodium succinate [6], and 1,3 bis(2 hydroxyethyl) 5 hydroxy 6 methyluracil with fumaric acid [7] exhibit more pronounced antihypoxic activity than their initial components. A complex of 5 hydroxy 6 methyluracil with succinic acid has antioxidant and hepatoprotective effects [8,9].…”