BAY 38-7271 shows only minor interactions at the micromolar range with other binding sites such as adenosine A3 receptor (IC50 = 7.5 μM), peripheral GABAA benzodiazepine receptor (IC50 = 971 nM), melatonin ML1 receptor (IC50 = 3.3 μM), and at the monoamine transporter (IC50 = 1.7 μM).