2,6-Dihydroxy-4-carboxypyridine 2,6-Dihydroxy-4-pyridinecarboxylic acid 2,6-Dihydroxyisonicotinate 2,6-Dihydroxyisonicotinic acid 4-Pyridinecarboxylic acid, 1,2-dihydro-6-hydroxy-2-oxo- 4-Pyridinecarboxylic acid, 2,6-dihydroxy- 99-11-6 CITRAZINIC ACID EINECS 202-731-2 Isonicotinic acid, 1,2-dihydro-6-hydroxy-2-oxo- Isonicotinic acid, 2,6-dihydroxy- Kyselina citrazinova [Czech] NSC 41334