英文别名(2R)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile; (2R)-1-(2-chloroacetyl)pyrrolidine-2-carbonitrile; 2-Pyrrolidinecarbonitrile, 1-(chloroacetyl)-, (2R)- (9CI); Vildagliptin Chloroacetyl Nitrile (R)-Isomer; (R)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile; Vildagliptin Impurity 7; 2-Pyrrolidinecarbonitrile, 1-(2-chloroacetyl)-, (2R)- 
