13331-81-2 3,4-Pyridinedimethanethiol, 5-hydroxy-6-methyl-, hydrochloride 3-Pyridinol, 4,5-di(mercaptomethyl)-2-methyl-, hydrochloride 4,5-Di(mercaptomethyl)-2-methyl-3-pyridinol hydrochloride 4,5-Dimercaptopyridoxin hydrochlorid [German]