(6R,7S)-7-(2-((Cyanomethyl)thio)acetamido)-7-methoxy-3-(((1-methyl-1H-tetrazol-5-yl)thiomethyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, sodium salt 56796-20-4 (FREE ACID) AIDS-085767 AIDS085767 Cefmetazole