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Catsyn? N-([1,1'-biphenyl]-4-YL)-N-(9,9-dimethyl-9H-fluoren-2-YL)-9,9'-spirobi[fluoren]-2-amine | CAS 1364602-88-9?? ?? ??? ?????. ? ??? C52H37N??, ???? 675.86g/mol??, ??? ????? NLT 98%???.