英文别名(5AS,10aS)-octahydro-5H,10H-dipyrrolo[1,2-a:1',2'-d]pyrazine-5,10-dione; cis-cyclo(Pro-Pro); Cyclo(prolylprolyl); cyclo(Pro,Pro); proline diketopiperazine; Cyclo(L-Pro-L-Pro); Cyclo(prolylproline); (3S,9S)-1,7-Diazatricyclo[7.3.0.03,7]dodecane-2,8-dione; Cyclo-(L-Pro-L-Pro); Cyclo(L-prolyl-L-prolyl); L-Proline anhydride; octahydro-dipyrrolo(1,2-a-1',2'-d)pyrazine-5,10-dione; Vildagliptin Impurity 41 
