CAS NO:33564-30-6 Cefoxitin Sodium Product Name Cefoxitin Sodium CAS RN 33564-30-6 English Name Cefoxitin Sodium Chemical Name sodium (6S,7R)-3-[(carbamoyloxy)methyl]-7-methoxy-8-oxo-7-[(thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate Molecular Formula C16H16N3NaO7S2 Molecular Weight 449.42 Quality Standard CP2010/USP32/JP14 Property White or off-white crystalline powder Content(titer)927-970ug/mg Absorption Coefficient 190-210 Moisture not more than 1.0% Heavy Metal not more than 20ppm pH Value 4.2-7.0 Specific Rotation +206