Ligand of translocator protein (TSPO, peripheral benzodiazepine receptor). Exhibits high affinity for TSPO in rat whole brain (Ki = 0.297 nM), and high potency against human and rat glial TSPO (IC50 values are 2.73 and 3.04 nM respectively). Displays no noticeable binding to a number of other receptors, transporters or ion channels. Also displays anxiolytic and antidepressant effects in rodent models, without inducing benzodiazepine-like adverse effects. Purity 98%. MW (observed): 401.46