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Catsyn? Dihydro-1H-cyclopenta[1,2-C:3,4-C']difuran-1,3,4,6(3AH,3BH,6AH)-tetraone | CAS 6053-68-5?? ?? ??? ?????. ? ??? C9H6O6??, ???? 210.14g/mol??, ??? ????? NLT 98%???.