... Additionally, a 108 Journal of the Chinese Chemical Society, 2011, 58, 108-117 * Corresponding author. ... product; its molecular weight is 409.2. Based on this mo- lecular weight, we proposed intermediate imine 21 as the chemical structure of this new product. ...
![(2S)-1-[2-amino-3,3-dimethyl-5-oxo-5-(3-trifluoromethyl-5,6-dihydro-8H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl)pentanoyl]pyrrolidine-2-carbonitrile Structure](https://image.chemsrc.com/caspic/143/1150656-76-0.png)
![3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine Structure](https://image.chemsrc.com/caspic/166/486460-21-3.png)
![(2S)-1-[2-amino-3,3-dimethyl-5-oxo-5-(3-trifluoromethyl-5,6-dihydro-8H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl)pentanoyl]pyrrolidine-2-carbonitrile trifluoroacetate Structure](https://image.chemsrc.com/caspic/486/1309674-55-2.png)