308-48-5 4-02-00-00817 (Beilstein Handbook Reference) AI3-16940 BRN 1809360 Bis(perfluorobutyl) ether Butane, 1,1'-oxybis(1,1,2,2,3,3,4,4,4-nonafluoro- Dinonafluorobutyl ether Diperfluorobutyl ether ETHER, BIS(NONAFLUOROBUTYL) NSC 7710 Perfluoro-n-dibutyl ether Perfluorodibutyl ether Perfluorodibutylether