Preparation and applications of the products of reaction of uric acid with formaldehyde

Abstract Reactions of uric acid (UA) with various amounts of formaldehyde have been studied. At the molar ratio of formaldehyde to uric acid smaller than 6, solid products are formed, at the ratio exceeding 6, the products have the form of resinous substances. The products have been analyzed chemically (acid number, formaldehyde content) and spectrally ( 1 H NMR, IR). Possible applications of the products are pointed out.