英文别名N-[(2Z)-Piperazin-2-ylidene]-2,2,2-trifluoroacetohydrazide; Trifluoroacetic Acid (2Z)-Piperazinylidenehydrazide; (Z)-2,2,2-trifluoro-N'-(piperazin-2-ylidene)acetohydrazide; 2,2,2-trifluoro-N'-(1,2,3,6-tetrahydropyrazin-5-yl)acetohydrazide; Acetic acid,trifluoro-, (2Z)-piperazinylidenehydrazide (9CI); Acetic acid,trifluoro-,2-(3,4,5,6-tetrahydropyrazinyl)hydrazide; Sitagliptin Impurity 49 
