Sodium 7-[(1H-tetrazol-4-yl)acetyl]-3-(1,3,4-thiadiazol-5-ylthio)cephalosporanate

8-oxo-7-[(1h-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monosodium salt

8-Oxo-7-[(1H-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monosodium salt

(6R)-7α-[[(1H-Tetrazol-1-yl)acetyl]amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid sodium salt