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4-Fluorophthalic anhydride319-03-9100 % similar 5,5'-Bi-2-benzofuran-1,1',3,3'-tetrone2420-87-361 % similar 4,5-Difluorophthalic anhydride18959-30-357 % 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 4,4'-Carbonyldiphthalic anhydride2421-28-555 % similar 4-Hydroxyphthalic anhydride27550-59-055 % similar 4-Bromophthalic anhydride86-90-855 % similar 4,4′-(Hexafluoroisopropylidene)diphthalic anhydride1107-00-253 % similar Naphthalenetetracarboxylic dianhydride81-30-152 % similar Phthalic anhydride85-44-952 % similar 3,3',4,4'-Diphenyl sulfone tetracarboxylic dianhydride2540-99-052 % similar Methyl 2,4-difluorobenzoate106614-28-251 % similar Trimellitic anhydride chloride1204-28-050 % similar Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]1732-96-350 % similar Bis[(3,4-dicarboxylic anhydride) phenyl]terephthalate21117-79-350 % similar Methyl 2-amino-4-fluorobenzoate2475-81-250 % similar 4-Fluorophthalic acid320-97-850 % similar