15686-71-2 (ANHYDROUS) 23325-78-2 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-aminophenylacetyl]amino]-3-methyl-8-oxo-, (6R,7R)- AIDS-070031 AIDS070031 Cephalexin Cephalexin monohydrate