5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((hydroxyimino)phenylacetyl)amino)-8-oxo-3-(((1-(sulfomethyl)-1H-tetrazol-5-yl)thio)methyl)-, disodium salt, (6R-(6alpha,7beta(Z)))- 66242-83-9 SK&F 80303 SK&F-80303 Skf 80303