Nsc292900

trans-1,2,3,6-Tetrahydrophthalic anhydride

3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione

4-Cyclohexene-1,2-dicarboxylic anhydride, trans-

1,3-Isobenzofurandione, 3A,4,7,7A-tetrahydro-, trans-