Vildagliptin Related Compound F Vildagliptin iMpurity K (2R)-1-[2-[(3-Hydroxytricyclo[3.3.1.1(3,7)]dec-1-yl)amino]acetyl]-2-pyrrolidinecarbonitrile (S)-1-(2-Aminoacetyl)-pyrrolidine-2-carbonitrile (S)-1-(2-Chloroacetyl)pyrrolidine-2-carboxaMide CHLOROAC-PRO-OH 1-(CHLOROACETYL)-L-PROLINE METHYL ESTER L-Prolinamide vildagliptin Impurity R Vildagliptin Related Compound G VILDAGLIPTIN (2S)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile N-acetic acid-1-aMino-3-adaMantanol Vildagliptin IMpurity 2 (Mixture of DiastereoMers) 2-Pyrrolidinecarbonitrile,1-acetyl-,(2S)-(9CI) (S)-Pyrrolidine-2-carbonitrile hydrochloride (5aR,10aR)-1,2,3,5a,6,7,8,10a-octahydrodipyrrolo[1,2-c:1',2'-f]pyrazine-5,10-dione Vildagliptin Impurity 25