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Phthalic anhydride85-44-9100 % similar 2,3-Naphthalenedicarboxylic anhydride716-39-265 % similar 1,8-Naphthalic anhydride81-84-563 % similar Naphthalenetetracarboxylic dianhydride81-30-162 % similar Dimethyl phthalate131-11-361 % similar Benzoic anhydride93-97-059 % similar 5,5'-Bi-2-benzofuran-1,1',3,3'-tetrone2420-87-358 % similar Diphenyl phthalate84-62-858 % similar Benzylidenephthalide575-61-157 % similar 3-Chlorophthalic anhydride117-21-556 % similar Furo[3,4-b]pyridine-5,7-dione699-98-956 % similar 4,4'-Oxydiphthalic anhydride1823-59-254 % similar Pyridine-3,4-dicarboxylic anhydride4664-08-854 % similar Diisopropyl phthalate605-45-854 % similar Diethyl phthalate84-66-254 % similar 3-Iodophthalic anhydride28418-88-454 % similar 3-Hydroxyphthalic anhydride37418-88-554 % similar 3-Methylphthalic anhydride4792-30-754 % similar 3-Fluorophthalic anhydride652-39-154 % similar Homophthalic anhydride703-59-354 % similar