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Catsyn? [1,1':4',1''-Terphenyl]-3,3'',5,5''-tetracarboxylic acid, 2',5'-difluoro- | CAS 1119195-97-9?? ?? ??? ?????. ? ??? C22H12F2O8??, ???? 442.32g/mol??, ??? ????? NLT 98%???.