Heptafluorobutyric anhydride336-59-431 % similar 3,3,4,4,5,5,5-Heptafluoro-2-pentanone355-17-931 % similar Heptafluorobutyryl chloride375-16-631 % similar Perfluorobutanoic acid375-22-431 % similar Heptafluorobutyramide662-50-031 % similar Methyl perfluoroheptanoate14312-89-131 % similar Methyl perfluorohexadecanoate165457-57-831 % similar Methyl perfluorotetradecanoate203302-99-231 % similar Methyl 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-nonadecafluorodecanoate307-79-931 % similar Perfluorooctanoic acid sodium salt335-95-531 % similar Methyl perfluorooctanoate376-27-231 % similar Ammonium perfluorooctanoate3825-26-131 % similar Methyl perfluorononanoate51502-45-531 % similar Methyl perfluorododecanoate56554-52-031 % similar 1,1,1-Trifluorobutan-2-one381-88-430 % similar 1-Chloro-3,3,3-trifluoroacetone431-37-830 % similar