(1,1'-BINAPHTHALENE)-2,2'-DIAMINE 1,1'-Bi(2-naphthalenylamine) 1,1'-Bi(2-naphthylamine) 2,2'-Diamino-1,1'-dinaphthyl 4-13-00-00489 (Beilstein Handbook Reference) 4488-22-6 BRN 2138401 NSC 519704