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Catsyn? 9,9-Dimethyl-N-(4′-methyl[1,1′-biphenyl]-2-YL)-9H-fluoren-2-amine | CAS 2478531-86-9?? ?? ??? ?????. ? ??? C28H25N??, ???? 375.50g/mol??, ??? ????? NLT 98%???.