1 715 (2r)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8h)-yl]-1-(2,4,5-trifluorophenyl)butan-2-a mine 1.000 2 448 (2r)-4-[(8r)-8-methyl-2-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[1,5-a]pyrazin-7(8h)-yl]-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-amine 0.900 3 8O3 (R)-4-(3-amino-4-(2,4,5-trifluorophenyl)butanoyl)piperazin-2-one 0.724