PelanserinPelanserin is a serotonin 5-HT2 and α1-adrenergic receptor antagonist which was under development for the treatment of hypertension but was never marketed. Its development was discontinued in 2001.PharmacologyPharmacokineticsThe pharmacokinetics of pelanserin have been studied. It has a relatively short elimination half-life. The drug's time to peak levels was less than 1hour and its half-life was 3.8hours in a single subject in an analytical study.ChemistrySynthesisPelanserin can be synthesized by a reaction between isatoic anhydride and 1--4-phenylpiperazine in the presence of phosgene.