4,4′-Oxydiphthalic anhydride1823-59-2100 % similar 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride38103-06-970 % similar Bpda2420-87-363 % similar 4-Chlorophthalic anhydride118-45-657 % similar 4-Methylphthalic anhydride19438-61-057 % similar Benzophenonetetracarboxylic dianhydride2421-28-557 % similar 4-Fluorophthalic anhydride319-03-957 % similar 4-Bromophthalic anhydride86-90-857 % similar Trimellitic anhydride552-30-756 % similar Naphthalenetetracarboxylic dianhydride81-30-154 % similar Phthalic anhydride85-44-954 % similar 3,3′,4,4′-Diphenyl sulfone tetracarboxylic dianhydride2540-99-053 % similar 2,3-Naphthalenedicarboxylic anhydride716-39-252 % similar Trimellitic anhydride chloride1204-28-052 % similar Ethylene glycol bis(anhydrotrimellitate)1732-96-352 % similar 4-tert-Butylphthalic anhydride32703-79-052 % similar 4,4′-(Hexafluoroisopropylidene)diphthalic anhydride1107-00-250 % similar 4-(Phenylethynyl)phthalic anhydride119389-05-849 % similar 4-Nitrophthalic anhydride5466-84-249 % similar 4,5-Dichlorophthalic anhydride942-06-348 % similar