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Catsyn? 4',5'-Bis(4-carboxyphenyl)-3',6'-dimethyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid | CAS 2161327-52-0?? ?? ??? ?????. ? ??? C36H26O8??, ???? 586.59g/mol??, ??? ????? NLT 98%???.