2-Methyl-3-hydroxy-4-formyl-5-hydroxymethylpyridine hydrochloride 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde, hydrochloride 4-Pyridinecarboxaldehyde, 3-hydroxy-5-(hydroxymethyl)-2-methyl-, hydrochloride 65-22-5 EINECS 200-602-5 NSC 19613 PYRIDOXAL HYDROCHLORIDE Vitamin B6 hydrochloride