仅用于研发试验中鉴别、检查。898543-70-9|西格列汀杂质21对照品,制备中,详情请联系Medlife客服进行咨询。(R,E)-3-((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-yl)amino)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)but-2-en-1-one可放大生产,批量保障。