Synonyms:
4\'-diamine ; n4,n4'-di-naphthalen-1-yl-biphenyl-4,4'-diamine ; n,n'-di(1-naphthy)-4,4-benzidine ; n, n'- dinaphthol- benzidine ; n'-di(1-naphthyl)-4,4'-benzidine ; n4\'-di-naphthalen-1-yl-biphenyl-4 ; n,n'-di(1-naphthyl)- ; n,n'-dinaphthyl-4,4'-diphenyldiamine ; n,n'-di(1-naphthyl) benzidine ; n,n'-di(1-naphthyl)-4,4'-benzidine