Synonyms: 3-trifluoro methyl-[1,2,4]triazole[4,3-a]piperazine;
3-(trifluoromethyl)-5,6,7,8-tetrahydro-1,2,4-triazolo-[4,3-alpha] pyrazine; IntermediateⅠof Sitagliptin phosphate; 3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine hydrochloride; 3-(trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]traazoli[4,3-1]pyrazine hydrochloride; Sitagliptin intermediates