Asenapine (Org 5222) hydrochloride, an atypical antipsychotic, is an antagonist of serotonin receptors (pKi: 8.4-10.5), adrenoceptors (pKi: 8.9-9.5), dopamine receptors (pKi: 8.9-9.4) and histamine receptors (pKi: 8.2-9.0). Asenapine hydrochloride can be used in the research of schizophrenia and bipolar disorder[1][2]r[3][4][5].