A substance used in a type of radiation therapy called boron neutron capture therapy. Boronophenylalanine-fructose complex is injected into a blood vessel and collects in tumor cells. The patient then receives radiation therapy with atomic particles called neutrons. The neutrons react with the boron in boronophenylalanine-fructose complex, producing radioactive particles that kill the tumor cells without harming normal cells. Also called BPA-F.