西他列汀中间体西他列汀中间体西他列汀中间体西他列汀中间体西他列汀中间体西他列汀中间体3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazinehydrochloride486460-21-33-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazinehydrochloride486460-21-33-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazinehydrochloride486460-21-33-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazinehydrochloride486460-21-3)