Not Less Than - 95%
2-(3-Hydroxyadamantan-1-yl)-1-iminohexahydropyrrolo[1,2-a]pyrazin-4(1H)-one; Hexahydro-2-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)-1-iminopyrrolo[1,2-a]pyrazin-4(1H)-one;Cyclic Amidine; 2-((1r,3s,5R,7S)-3-Hydroxyadamantan-1-yl)-1-iminohexahydropyrrolo[1,2-a]pyrazin-4(1H)-one; 2-((1r,3s,5R,7S)-3-hydroxyadamantan-1-yl)hexahydropyrrolo[1,2-a]pyrazine-1,4-dione; 2-(3-hydroxy-adamantan-1 -yl)-1-imino-hexahydro-pyrrolo[l,2-a]pyrazin-4-one; Vildagliptin Impurity A