... phosphate, CAS:654671-78-0 white or off-white powder anti-diabetes raw material Best quality and honest cooperat product NameSitagliptin ... a)pyrazine, 7-((3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl)-5,6,7,8-tetrahydor- ... 4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine; (3S)-3-amino-1-[3-( ... trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]- ...