8-M-PDOT is a melatonin receptor 2 (MT2) agonist (Ki = 1.12 nM). It is 5.2-fold selective for MT2 over MT1 receptors in a radioligand binding assay. Striatal microinfusion of 8-M-PDOT (10 μg/μl) increases the percentage of time spent in the open arms of the elevated plus maze, indicating anxiolytic-like activity, in a rat model of rotenone-induced Parkinson''s disease.