1,1,1,2,3,4,4,4-Octafluorobut-2-ene 2-Butene, 1,1,1,2,3,4,4,4-octafluoro- 2-Butene, octafluoro- 360-89-4 4-01-00-00783 (Beilstein Handbook Reference) BRN 1783460 EINECS 206-640-9 FC-1318 OCTAFLUORO-2-BUTENE Octafluorobut-2-ene or Refrigerant gas R 1318 [UN2422] [Nonflammable gas] Octafluorobutene-2 Perfluoro-1-methylpropene Perfluorobut-2-ene R 1318my UN2422