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Catsyn? [1,1':3',1''-Terphenyl]-4,4''-dicarboxylic acid,5'-(4-carboxy-3-hydroxyphenyl)-3,3''-dihydroxy- | CAS 1397264-18-4?? ?? ??? ?????. ? ??? null??, ???? g/mol??, ??? ????? NLT 98%???.