for the following products
2,2'-bis-(Trifluoromethyl)-4,4'-diamino biphenyl | 2,2'-bis-(Trifluoromethyl)-[1,1'-biphenyl]-4,4'-diamine | 2,2'-bis-(Trifluoromethyl)biphenyl-4,4'-diamine | 4,4'-Diamino-2,2'-bis(trifluoromethyl)biphenyl | TMFB and 2,2'-bis-(Trifluoromethyl)benzidine
