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Catsyn? 5',5'''-Bis(4-carboxyphenyl)-[1,1':3',1'':4'',1''':3''',1''''-quinquephenyl]-4,4''''- dicarboxylic acid | CAS 1816997-25-7?? ?? ??? ?????. ? ??? C46H30O8??, ???? 710.73g/mol??, ??? ????? NLT 98%???.