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Pyridine-3,4-dicarboxylic anhydride4664-08-8100 % similar Phthalic anhydride85-44-954 % similar Nicotinic anhydride16837-38-052 % similar Methyl 4-aminopyridine-3-carboxylate16135-36-751 % similar Cinchomeronic acid490-11-948 % similar Naphthalenetetracarboxylic dianhydride81-30-148 % similar 3-Iodoisonicotinic acid methyl ester188677-49-847 % similar 3-Amino-isonicotinic acid methyl ester55279-30-647 % similar Methyl 3-bromoisonicotinate59786-31-147 % similar BPDA2420-87-347 % similar Furo[3,4-b]pyridine-5,7-dione699-98-945 % similar 4,4′-Oxydiphthalic anhydride1823-59-244 % similar Ethyl 3-bromopyridine-4-carboxylate13959-01-844 % similar Ethyl 3-aminoisonicotinate14208-83-444 % similar Methyl 4-(trifluoromethyl)nicotinate175204-82-744 % similar 4-Chlorophthalic anhydride118-45-642 % similar 4,4'-(1,4-Phenylenedioxy)bisphthalic Anhydride17828-53-442 % similar 4-Methylphthalic anhydride19438-61-042 % similar Benzophenonetetracarboxylic dianhydride2421-28-542 % similar 4-Hydroxyphthalic anhydride27550-59-042 % similar