The molecule is an organic heterotricyclic compound that is an antiemetic used (as its hydrochloride salt) in combination with netupitant (under the trade name Akynzeo) to treat nausea and vomiting in patients undergoing cancer chemotherapy. It has a role as an antiemetic and a serotonergic antagonist. It is a delta-lactam, an organic heterotricyclic compound and an azabicycloalkane. It is a conjugate base of a palonosetron(1+).
(3aS)-2-[(3S)-1-azabicyclo[2.2.2]octan-3-yl]-3a,4,5,6-tetrahydro-3H-benzo[de]isoquinolin-1-one