The chemical Palonosetron has a known molecular formula of C19-H24-N2-O. Synonyms may include: (S-(R*,R*))-2-(1-Azabicyclo(2.2.2)oct-3-yl)-2,3,3a,4,5,6-hexahydro-1H-benz(de)isoquinolin-1-one, 2-Qhbiqo, (-)-Palonosetron, UNII-5D06587D6R (ChemID). Palonosetron has been assigned a MeSH pharmacological action of: Serotonin 5-HT3 Receptor Antagonist.