(S)-Sitagliptin phosphate, the less active S-enantiomer of Sitagliptin phosphate, is a high-potency inhibitor of DPP4. It exhibits an IC50 of 19 nM in Caco-2 cell extracts.
Metformin hydrochloride mixture with sitagliptin phosphate is an AMP-activated protein kinase stimulant. It is also a CD26 antigen inhibitor, Gluconeogenesis inhibitor, and Glucose modulator.