1-Butanone,2,2,3,3,4,4,4-heptafluoro-1-(1H-imidazol-1-yl)- , its cas register number is 32477-35-3. It also can be called N-Heptafluorobutyrylimidazole ; and 1-(2,2,3,3,4,4,4-Heptafluoro-1-oxobutyl)-1H-imidazole .