1,1'-Biphenyl, 2,2',3,3',5,5',6,6'-octafluoro- 2,2',3,3',5,5',6,6'-Octafluorobiphenyl 3883-86-1 4,4'-Dihydrooctafluorobiphenyl 4-H, 4'-H-Octafluorobiphenyl 4H,4'H-Octafluorobiphenyl Biphenyl, 2,2',3,3',5,5',6,6'-octafluoro- NSC96909