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4-(Phenylethynyl)phthalic anhydride119389-05-853 % similar Propylidenephthalide17369-59-453 % similar Perylenetetracarboxylic dianhydride128-69-852 % similar 4-Chlorophthalic anhydride118-45-652 % similar 4,4'-(1,4-Phenylenedioxy)bisphthalic Anhydride17828-53-452 % similar 4-Methylphthalic anhydride19438-61-052 % similar 4,4'-Carbonyldiphthalic anhydride2421-28-552 % similar 4-Hydroxyphthalic anhydride27550-59-052 % similar 4-Fluorophthalic anhydride319-03-952 % similar Benzyl phthalate523-31-952 % similar 4-Bromophthalic anhydride86-90-852 % similar 1,2-Naphthalenedicarboxylic anhydride5343-99-752 % similar Dipropyl phthalate131-16-850 % similar Diallyl phthalate131-17-950 % similar 2,3′,3,4′-Biphenyltetracarboxylic dianhydride36978-41-350 % similar 4-Chloro-1,8-naphthalic anhydride4053-08-150 % similar Butylidenephthalide551-08-650 % similar 3-(p-Chlorobenzylidene)phthalide20526-97-048 % similar 4-Aminonaphthalene-1,8-dicarboxylic anhydride6492-86-048 % similar 4-Bromo-1,8-naphthalic anhydride81-86-748 % similar