4,5-Bis(hydroxymethyl)-2-methyl-3-pyridinol 58-56-0 (HCL) 65-23-6 (FREE BASE) AIDS-006784 AIDS006784 Aderoxine Gravidox NSC36225 (HCL) PN Pyridoxin hydrochloride Pyridoxine Pyridoxol Vitamin B6