n4,n4'-(biphenyl-4,4'-diyl)bis(n4,n4',n4'-triphenylbiphenyl-4,4'-diamine
name：n4,n4'-(biphenyl-4,4'-diyl)bis(n4,n4',n4'-triphenylbiphenyl-4,4'-diamine cas no.：167218-46-4 purity：99.80%