Perfluorobutanesulfonic acid375-73-5100 % similar Perfluorooctanesulfonic acid1763-23-196 % similar Perfluorohexanesulfonic acid355-46-496 % similar Perfluoroheptanesulfonic acid375-92-896 % similar Ammonium perfluorooctylsulfonate29081-56-985 % similar Perfluorobutanesulfonyl fluoride375-72-454 % similar Perfluorooctanesulfonyl fluoride307-35-752 % similar Nonafluorobutanesulfonic acid anhydride36913-91-452 % similar 1,1,2,2,3,3,4,4,5,5,6,6,6-Tridecafluoro-1-hexanesulfonyl fluoride423-50-752 % similar Perfluoro(2-ethoxyethane)sulfonic acid113507-82-752 % similar Perfluorooctanesulfonamide754-91-650 % similar Lithium nonafluorobutanesulfonate131651-65-547 % similar Potassium perfluorobutanesulfonate29420-49-347 % similar Potassium perfluorooctanesulfonate2795-39-345 % similar Potassium perfluorohexanesulfonate3871-99-645 % similar Sulfluramid4151-50-243 % similar Triflic acid1493-13-642 % similar Perfluorobutane355-25-941 % similar 1H,1H,2H,2H-Perfluorooctanesulfonic acid27619-97-240 % similar Perfluorooctane307-34-639 % similar