5-Thia-1-azabicyclo(4,2,0)oct-2-ene-2-carboxylic acid, 3-(hydroxymethyl)-8-oxo-7-(2-(4-pyridylthio)acetamido)-, Acetate (Ester), Monosodium Salt
7-(alpha-(4-Pyridylthio)acetamido)cephalosporanic acid sodium salt