Synonyms:
2,2',7,7'-tetrakis(diphenylamino)-9,9'-spirobifluorene ; 2,2',7,7'-tetrakis(n,n-diphenylamino)-9,9-spirobifluorene 99% (hplc) ; s-tad ; n2,n2,n2?,n2?,n7,n7,n7?,n7?-octaphenyl-9,9?-spirobi[9h-fluorene]-2,2?,7,7?-tetramine ; 2,2',7,7'-tetrakis-(n,n-diphenylamino)-spiro-9,9'-bifluorene ; spiro-tad , 2,2',7,7'-tetrakis(n,n-diphenylamino)-9,9-spir ; spiro-tad
