“It has been found that a number of amines (i.e. ethylenediamine, N,N′‐dimethylethylenediamine, glycine, glycinamide, glycylglycine , glycylgylcylglycine, putrescine, spermidine and spermine) react thermally with such hydrates to form products with UV spectra characteristic of opened ring uridine‐amine adducts.”