2,2',7,7'-Tetrakis(di-p-tolylamino)spiro-9,9'-bifluorene; 2,2',7,7'-Tetrakis(di-4-methylphenylamino)-9,9'-spirobifluorene; HIM 1; 2,2',7,7'-Tetrakis(N,N-ditolylamino)-spiro-9,9'-bifluorene; 9,9'-Spirobi[9H-fluorene]-2,2',7,7'-tetramine, N,N,N',N',N'',N'',N''',N'''-octakis(4-methylphenyl)- (9CI); HIM; 9,9'-Spirobi[9H-fluorene]-2,2',7,7'-tetramine, N2,N2,N2',N2',N7,N7,N7',N7'-octakis(4-methylphenyl)-; Expand