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Catsyn? (1α,2α,3β,6β)-1,2,3,6-Tetrahydro-3,6-methanophthalic anhydride | CAS 2746-19-2?? ?? ??? ?????. ? ??? C9H8O3??, ???? 164.16g/mol??, ??? ????? NLT 98%???.