3,6-Endooxyphthalic anhydride, hexahydro- 3,6-Endoxohexahydrophthalic anhydride 4,7-Epoxyisobenzofuran-1,3-dione, hexahydro- 5442-12-6 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride NSC14003 Phthalic anhydride, hexahydro-3,6-endoxo- WLN: T C555 A AO DVOVTJ