https://pubchem.ncbi.nlm.nih.gov/compound/1-Butanesulfonyl-fluoride_-1_1_2_2_3_3_4_4-octafluoro-4-_trifluoroethenyl_oxy_-_-polymer-with-tetraf
1-Butanesulfonyl fluoride, 1,1,2,2,3,3,4,4-octafluoro-4-[(trifluoroethenyl)oxy]-, polymer with...
1-Butanesulfonyl fluoride, 1,1,2,2,3,3,4,4-octafluoro-4-[(trifluoroethenyl)oxy]-, polymer with tetrafluoroethene chemical information summary.
fluoride
https://webbook.nist.gov/cgi/inchi?ID=C2386609&Mask=80
1-Butanesulfonyl chloride
chloride