Method of producing bromine radioisotope-labelled derivatives of #betta#-aroyl-#betta#-bromoacrylic acid

The production essentially consists in the use of a non-active derivative as target material for neutron irradiation. Some of the bromine radionuclides resulting from the neutron reaction on bromine may be knocked out from the original target molecule; part of the knocked-out radionuclides will, however, be returned back to the molecule in subsequent processes. (J.P.)