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Catsyn? 1-(7-Bromo-9,9-difluoro-9H-fluoren-2-YL)-2-chloroethanone | CAS 1378387-81-5?? ?? ??? ?????. ? ??? C15H8BrClF2O??, ???? 357.58g/mol??, ??? ????? NLT 98%???.