(6R,7R)-7-((R)-2-Hydroxy-2-phenylacetamido)-8-oxo-3-(1-sulfomethyl-1H-tetrazol-5-yl)thiomethyl)-5-thia-1-azabicyclo(4.2.0)-2-en-2-carbonsaeure mononatrium-salz 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((hydroxyphenylacetyl)amino)-8-oxo-3-(((1-(sulfomethl)-1H-tetrazol-5-yl)thio)methyl)-, monosodium salt, (6R-(6 alpha, 7 beta (R*))) 71420-79-6 Cefonicid monosodium Cefonicid monosodium [USAN]