cephalexin(6R,7R)-7-{[(2R)-2-amino-2-phenylacetyl]amino}-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid7-(D-alpha-Aminophenylacetamido)desacetoxycephalosporanic acid7-beta-(D-alpha-Amino-alpha-phenylacetylamino)-3-methyl-3-cephem-4-carboxylic acidCEXCefalexinCelexinCepastarCepexinCephacillinCeporexin