63521-15-3 (SODIUM SALT) 7-(((3,5-Dichloro-4-oxo-1(4H)-pyridinyl)acetyl)amino)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid AIDS-156235 AIDS156235 Cefazedone (*sodium salt*) Cefazedone, sodium salt NSC304118 (SODIUM SALT) Refosporin (*sodium salt*) Refosporin sodium salt {5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic} acid, {7-[[(3,} {5-dichloro-4-oxo-1(4H)-pyridinyl)acetyl]amino]-3-[[(5-methyl-1,3,} 4-thiadiazol-2-yl)thio\]methyl\]-8-oxo-, monosodium salt, (6R-trans)-