2-HYDROXYPYRIDINE-4-CARBOXYLIC ACID;RARECHEM AL BO 2291;4-CARBOXY-2(1H)-PYRIDINONE;4-Pyridinecarboxylicacid,2,3-dihydro-2-oxo-(9CI);2-Hydroxypyridine-4-carboxyL;4-Pyridinecarboxylic acid, 2,3-dihydro-2-oxo-;2-hydroxyisonicotinicI acid;2-oxo-1H-pyridine-4-carboxylicaci