Furo(3,4-b)pyrazine-5,7-dione4744-50-7100 % similar Furo[3,4-b]pyridine-5,7-dione699-98-959 % similar 2-Amino-3-(methoxycarbonyl)pyrazine16298-03-645 % similar Methyl 3-chloropyrazine-2-carboxylate27825-21-445 % similar Methyl 3-bromopyrazine-2-carboxylate51171-02-945 % similar 2,3-Pyrazinedicarboxylic acid89-01-044 % similar Pyridine-3,4-dicarboxylic anhydride4664-08-841 % similar Nicotinic anhydride16837-38-040 % similar Naphthalenetetracarboxylic dianhydride81-30-140 % similar Phthalic anhydride85-44-940 % similar 2,3-Dimethyl 2,3-pyridinedicarboxylate605-38-939 % similar Benzoic anhydride93-97-038 % similar Methyl 3-methylpyridine-2-carboxylate59718-84-238 % similar Methyl 2-pyrazinecarboxylate6164-79-038 % similar Methyl 3-amino-2-pyridinecarboxylate36052-27-437 % similar Methyl 3-Hydroxy-2-pyridinecarboxylate62733-99-737 % similar Methyl 3-fluoropyridine-2-carboxylate869108-35-037 % similar 2-Acetyl-3-methylpyrazine23787-80-637 % similar Methyl 2-pyrimidinecarboxylate34253-03-737 % similar 4,5-Difluorophthalic anhydride18959-30-336 % similar