Vildagliptin Impurities
English Synonyms(5aR,10aR)-1,2,3,5a,6,7,8,10a-octahydrodipyrrolo[1,2-c:1',2'-f]pyrazine-5,10-dione;VildagliptinImpurity92;5H,10H-Dipyrrolo[1,2-a:1',2'-d]pyrazine-5,10-dione,octahydro-,(5aR,10aR)-;L-Pyroglutamicacidlactamimpurity(singleconfiguration);L-prolinecyclizationimpurity(singl