Synonyms: Trimellitic acid anhydride;1, 3-Dioxo-5-phthalancarboxylic acid;Epon 9150;1,3-Dihydro-1, 3-dioxo-5-isobenzofurancarboxylic acid;4-Carboxyphthalic anhydride;5-Isobenzofurancarboxylic acid,1,3-dihydro-1,3-dioxo-;Trimellitic acid, cyclic 1,2-anhydride;Anhydrotrimellic acid;Trimellic acid anhydride;Trimellic acid 1, 2-anhydride;5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-;1,3-dioxoisobenzofuran-5-carboxylic acid;1, 2,4-Benzenetricarboxylic acid 1,2-anhydride;Trimellitic acid 1, 2-anhydride;Trimellitic Anhydride(TMA);benzene-1,2,4-tricarboxylic acid 1,2-anhydride;