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4,4′-(Hexafluoroisopropylidene)diphthalic anhydride1107-00-250 % similar 4-(Phenylethynyl)phthalic anhydride119389-05-849 % similar 4-Nitrophthalic anhydride5466-84-249 % similar 4,5-Difluorophthalic anhydride18959-30-348 % similar 4,5-Dichlorophthalic anhydride942-06-348 % similar Perylenetetracarboxylic dianhydride128-69-847 % similar 2,3′,3,4′-Biphenyltetracarboxylic dianhydride36978-41-346 % similar 5-Phenoxy-1(3H)-isobenzofuranone57830-14-545 % similar Pyridine-3,4-dicarboxylic anhydride4664-08-844 % similar 3-Chlorophthalic anhydride117-21-541 % similar Trimethyl trimellitate2459-10-141 % similar 1,8-Naphthalic anhydride81-84-541 % similar 1,6,7,12-Tetra-tert-butylphenoxyperylene-3,4,9,10-tetracarboxylic dianhydride156028-30-740 % similar p-Anisic anhydride794-94-539 % similar 4-Methoxyphthalic acid1885-13-839 % similar Dimethyl 4-hydroxyphthalate22479-95-439 % similar 1,2-Naphthalenedicarboxylic anhydride5343-99-739 % similar 1,6,7,12-Tetrachloroperylene tetracarboxylic acid dianhydride156028-26-138 % similar 4-Chloro-1,8-naphthalic anhydride4053-08-138 % similar 4-META70293-55-938 % similar