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Catsyn? N4,N4'-bis(4-ethenylphenyl)-N4,N4'-DI-1-naphthalenyl-[1,1'-biphenyl]-4,4'-diamine | CAS 1010396-31-2?? ?? ??? ?????. ? ??? C48H36N2??, ???? 640.81g/mol??, ??? ????? NLT 98%???.