Perfluoropentane-1-sulphonyl fluoride, undecafluoro-pentane-1-sulfonyl fluoride, perfluoropentane-1-sulfonyl fluoride, Undecafluor-pentan-1-sulfonylfluorid, 1,1,2,2,3,3,4,4,5,5,5-Undecafluoro-1-pentanesulfonyl fluoride, perfluoro-n-pentane sulfonylfluoride, Perfluor-n-pentansulfonylfluorid