Anhydrosepedonin, 1,3-dioxo-1,3-dihydro-isobenzofuran-5-carboxylic acid, Anhydrotrimellitic acid, 4-carboxyphthalic anhydride, 1,2,4-Benzenetricarboxylic anhydride, 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo- more, TMA, Trimellitic Anhydride, Trimellitic anhydride, Trimellitic anhydride adduct, Trimellitic Anhydride, Trimellitic acid, 1,2-anhydride, Trimellitic anhydride, Trimellitic anhydride, Trimellitic anhydride, Trimellitic anhydride, Trimellitic anhydride, Benzene-1,2,4-tricarboxylic acid 1,2-anhydride, >99.9%