N-(4-amino-2-methyl-pyrimidin-5-ylmethyl)-N-(4-hydroxy-1-methyl-2-thioxo-but-1-enyl)-formamide;Natrium-2--5-hydroxy-penten-2-thiolat-3;Na-Salz von Thiamin;sodium;(Z)-2-[(4-amino-2-methylpyrimidin-5-yl)methyl-formylamino]-5-hydroxypent-2-ene-3-thiolate