Synonyms: N4,N4,N4′,N4′-Tetrakis([1,1′-biphenyl]-4-yl)-[1,1′-biphenyl]-4,4′-diamine; N,N,N’,N’-Tetrakis([1,1′-biphenyl]-4-yl)-[1,1′-biphenyl]-4,4′-diamine; 4,4′-Bis[bis(4-biphenylyl)amino]biphenyl; N,N,N’,N’-Tetrakis(biphenyl-4-yl)benzidine; Purity:99%; Application:OLED Materials; Customizing service, best service; Comprehensive quality management, High Quality, Welcome Contact!