(6R, 7R)-3-[[(5-Methyl-1,3,4-thiadiazol-2- yl)thio]methyl]-8-oxo-7-[[1H-tetrazol-1- yl)acetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2- ene-2-carboxylic acid 25953-19-9 (FREE ACID) 27164-46-1 (SODIUM SALT) AIDS-007762 AIDS007762 Acef Atirin CEZ Cefamezin Cefazil Cefazina Cefazolin Cefazoline Cephamezine Firmacef Kefzol Liviclina NSC291561 (SODIUM SALT) SKF 41558 Totacef