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Catsyn? 5,5'-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) | CAS 38103-06-9?? ?? ??? ?????. ? ??? C31H20O8??, ???? 520.49g/mol??, ??? ????? NLT 98%???.