Sitagliptin N-sulfate is a phase II metabolite of the dipeptidyl peptidase 4 (DPP-4) inhibitor (-)-sitagliptin . Sitagliptin N-sulfate is formed via sulfation and has been found in rat bile following oral administration of (-)-sitagliptin.

Sitagliptin N-Sulfate (sodium salt)

Methanol:Slightly soluble
Powder: -20°C for 3 years
In solvent: -80°C for 2 years