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CAS: 31175-20-9 Molecular Formula: (C2F4)x • (C2F3)y • (OC3F6)z • C2HF4O4S • x(H2O) Synonym: 1,1,2,2-Tetrafluoro-2-[1,2,2-trifluoro-1-(trifluoromethyl)-2-[(1,2,2-trifluorovinyl)oxy]ethoxy]-ethanesulfonic Acid Polymer with Tetrafluoroethylene,2-[1-[Difluoro[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro-ethanesulfonic Acid Polymer with Tetrafluoroethene,Tetrafluoroethene Polymer with 2-[1-[Difluoro[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoroethanesulfonic Acid,Flemion R Nafion 663492 PSA 1 PSA 2,Perfluoro-3,6-dioxa-4-methyl-7-octene-1-sulfonic acid-tetrafluoroethylene Copolymer,Perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid-tetrafluoroethylene Copolymer,Perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid-tetrafluoroethylene Polymer,Perfluoro[2-(2-sulfonylfluoroethoxy)propyl vinyl ether]-tetrafluoroethylene Copolymer,SHF 301,SPL 2,SPL 5,Nafion (NR50) Tetrafluoroethylene-perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic Acid Copolymer; IUPAC Name: 1,1,2,2-tetrafluoro-2-[1,1,1,2,3,3-hexafluoro-3-(2,2,3,4,4,5,5-heptafluorohexan-3-yloxy)propan-2-yl]oxyethanesulfonic acid SMILES: OS(C(F)(F)C(F)(F)OC(F)(C(F)(F)F)C(F)(F)OC(C(F)(C(F)(F)C)F)(F)C(F)(F)C)(=O)=O