Synonyms(6R,7R)-7-[[(2R)-Aminophenylacetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid; Delta 2 Cephalexin Close (6R,7R)-7-[[(2R)-Aminophenylacetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid; Delta 2 Cephalexin Related products Cefalexin EP Impurity F M.F. M.W. 347.40 CAT# AR-C05342 CAS# 79750-46-2