METHOD OF TRITIUM LABELED COMPOUNDS SELECTED FROM CLASSES OF AMINO ACIDS, AMINES, AMINOSUGARS, SUGARS, PURINE AND PYRIMIDINE BASES AND NUCLEOSIDES, CARBOXYLIC ACIDS, NITROGEN-CONTAINING DERIVATIVES OF TETRAHYDROTHIOPHENE Russian patent published in 1994 - IPC

FIELD: labeled compound. SUBSTANCE: parent compound is applied on aluminium oxide or calcium carbonate, mixed with palladium or rhodium catalyst on the carrier. Then isotope exchange is carried out between layer of applied compound and gaseous tritium at 100-220 C. Method ensures to prepare a broad assortment of organic substances showing total labelling with tritium of high molar radioactivity (30-850 Ci/mmole) as compared with a few Ci/mole in the known method. EFFECT: enhanced molar radioactivity of labeled compounds. 4 tbl