Abstract [Trifluoromethyl-[14 C 6]-phenyl]-SR 57746A 4, a neurotrophic and neuroprotective compound, has been synthesized for metabolic and pharmacokinetic studies. The key step for its synthesis was the preparation of 3-trifluoromethyl-[14 C 6]-bromobenzene 1. This compound was obtained in 4 steps from [14 C 6]-nitrobenzene 10 via [14 C 6]-3-iodo- nitrobenzene 11, 3-trifluoromethyl-[14 C 6]-nitrobenzene 8, 3-trifluoromethyl-[14 C 6]- ...