2-(((4,5-Dihydroxy-1-hydroxymethyl-2-oxo-3-imidazolidinyl)methyl)oxy)ethanesulfonic acid, sodium salt 70942-00-6 Ethanesulfonic acid, 2-((4,5-dihydroxy-3-(hydroxymethyl)-2-oxo-1-imidazolidinyl)methoxy)-, monosodium salt