68081-83-4 Carbamic acid, (4-methyl-1,3-phenylene)bis-, bis(2-(ethyl((perfluoro-C4-8-alkyl)sulfonyl)amino)ethyl) ester EINECS 268-357-7 N-Ethyl-N-perfluoroalkyl(C4-C8)sulfonyl-2-aminoethanol, 2,4-toluenediisocyanate adduct