1198-26-1 2-Methyl-3-hydroxy-4-mercaptomethyl-5-hydroxymethylpyridine hydrochloride 3-Pyridinemethanol, 5-hydroxy-4-(mercaptomethyl)-6-methyl-, hydrochloride 4-Mercaptomethyl-5-hydroxy-6-methyl-3-pyridinemethanol hydrochloride 4-Mercaptopyridoxin hydrochloride NSC 526970