(1,1'-Biphenyl)-4,4'-diamine, 3,3'-difluoro- (9CI) 3,3'-Difluoro-(1,1'-biphenyl)-4,4'-diamine 3,3'-Difluorobenzidine 4-13-00-00383 (Beilstein Handbook Reference) 448-97-5 BRN 2972179 Benzidine, 3,3'-difluoro- CCRIS 1785