Teneligliptin-d8 Sulfoxide is labelled Teneligliptin Sulfoxide (T018305), an impurity of Teneligliptin (T018300) which is a dipeptidyl peptidase-4 (DPP-4) inhibitor that is used to treat type 2 diabetes. Tenegliptin is eliminated from the via excretion, and has a half-life of 24.2 hours in the human body.