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Catsyn? N4,N4-bis(4'-amino-[1,1'-biphenyl]-4-YL)-[1,1'-biphenyl]-4,4'-diamine | CAS 2607105-89-3?? ?? ??? ?????. ? ??? C36H30N4??, ???? 518.65g/mol??, ??? ????? NLT 98%???.