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4,4'-Carbonyldiphthalic anhydride2421-28-5100 % similar Trimellitic anhydride chloride1204-28-065 % similar Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]1732-96-365 % similar Trimellitic anhydride552-30-765 % similar 5,5'-Bi-2-benzofuran-1,1',3,3'-tetrone2420-87-361 % similar Bis[(3,4-dicarboxylic anhydride) phenyl]terephthalate21117-79-359 % similar 4,4'-Oxydiphthalic anhydride1823-59-257 % similar 4-Chlorophthalic anhydride118-45-655 % similar 4,4'-(1,4-Phenylenedioxy)bisphthalic Anhydride17828-53-455 % similar 4-Methylphthalic anhydride19438-61-055 % similar 4-Hydroxyphthalic anhydride27550-59-055 % similar 4-Fluorophthalic anhydride319-03-955 % similar 4-Bromophthalic anhydride86-90-855 % similar Trimethyl trimellitate2459-10-153 % similar Naphthalenetetracarboxylic dianhydride81-30-152 % similar Phthalic anhydride85-44-952 % similar 3,3',4,4'-Diphenyl sulfone tetracarboxylic dianhydride2540-99-052 % similar Benzophenonetetracarboxylic acid2479-49-450 % similar 4-tert-Butylphthalic anhydride32703-79-050 % similar 2,3-Naphthalenedicarboxylic anhydride716-39-250 % similar