英文别名Vildagliptin Impurity 64; (2S,2'S)-1,1'-(1-Oxo-1,2-ethanediyl)bis-2-pyrrolidinecarbonitrile; Vildagliptin Impurity N27; (2S,2'S)-1,1'-acetylbis(pyrrolidine-2-carbonitrile); Vildagliptin Related Compound H; vildagliptin Impurity H; 2-Pyrrolidinecarbonitrile, 1,1'-(1-oxo-1,2-ethanediyl)bis-, (2S,2'S)- 
