2(3H)-Thiophenone, dihydro-3-(((3-hydroxy-5-(hydroxymethyl)-6-methyl-4-pyridyl)methylene)amino)-, monohydrochloride 23374-42-7 N-(2-Methyl-3-hydroxy-5-hydroxymethyl-4-pyridylmethylidene)-homocysteine thiolactone HCl