2,3-Dicarboxypyrazine 2,3-Pyrazinedicarboxylic acid 5-25-05-00383 (Beilstein Handbook Reference) 89-01-0 BRN 0147982 EINECS 201-875-3 NSC 1908 Pyrazine-2,3-dicarboxylate Pyrazine-2,3-dicarboxylic acid