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Catsyn? 5'-((3,5-Dicarboxyphenyl)ethynyl)-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid | CAS 1542480-30-7?? ?? ??? ?????. ? ??? C30H18O8??, ???? 506.46g/mol??, ??? ????? NLT 98%???.