(8aS)-2-(3-hydroxy-1-adamantyl)-1-imino-6,7,8,8a-tetrahydro-3H-pyrrolo[1,2-a]pyrazin-4-one

This compound is a pharmaceutical intermediate used in the manufacture of vildagliptin impurity reference standards. It features a polycyclic structure containing alcohol, amide, and amine functional groups.