Blonanserin exerts some blockade of α1-adrenergic receptors (Ki=26.7 nM) and also shows significant affinity for the D3 receptor (Ki=0.494 nM). Blonanserin possesses low affinity for the sigma receptor (IC50=286 nM), but lacks significant affinity for numerous other sites including the 5-HT1A, 5-HT3, D1, α2-adrenergic, β-adrenergic, H1, and mACh receptors and the monoamine transporters.