Palonosetron N-oxide is a metabolite of the serotonin (5-HT) receptor subtype 5-HT3antagonist palonosetron .1It is also a potential impurity in palonosetron preparations.2Palonosetron N-oxide is a degradation product formed by exposure to oxidative stress.

813425-83-1

C19H24N2O2

312.41

Palonosetron N-oxide

Ethanol:1 mg/mL
DMSO:PBS (pH 7.2) (1:4):0.2 mg/mL
DMSO:30 mg/mL
DMF:30 mg/mL
Powder: -20°C for 3 years
In solvent: -80°C for 2 years