1,2,3,6-Tetrahydrophthalic acid anhydride 1,2,3,6-Tetrahydrophthalic anhydride 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro- 27936-16-9 4-Cyclohexene-1,2-dicarboxylic acid anhydride 4-Cyclohexene-1,2-dicarboxylic anhydride 5-17-11-00134 (Beilstein Handbook Reference) 57570-09-9 85-43-8 AI3-22626 Anhydrid kyseliny tetrahydroftalove [Czech] BRN 0082340 Butadiene-maleic anhydride adduct EINECS 201-605-4 HSDB 846 Maleic anhydride adduct of butadiene Memtetrahydro phtalic anhydride NSC 82642 Phthalic anhydride, 1,2,3,6-tetrahydro- Rikacid TH TETRAHYDROPHTHALIC ANHYDRIDE THPA Tetrahydroftalanhydrid [Czech] Tetrahydrophthalic acid anhydride delta(4)-Tetrahydrophthalic anhydride delta(sup 4)-Tetrahydrophthalic anhydride delta-(sup4)-Tetrahydrophthalic anhydride