Pimavanserin is a member of the class of ureas in which three of the four hydrogens are replaced by 4-fluorobenzyl, 1-methylpiperidin-4-yl, and 4-(isopropyloxy)benzyl groups. An atypical antipsychotic that is used (in the form of its tartrate salt) for treatment of hallucinations and delusions associated with Parkinson's disease. It has a role as a 5-hydroxytryptamine 2A receptor inverse agonist, an antipsychotic agent and a serotonergic antagonist. It is a member of piperidines, an aromatic ether, a member of ureas, a tertiary amino compound and a member of monofluorobenzenes. It is a conjugate base of a pimavanserin(1+).
