5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid,7-[(aminophenylacetyl)amino]-3-methyl-8-oxo-,[6R-[6α,7β(S*)]]-;5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid,7-[[(2S)-aminophenylacetyl]amino]-3-methyl-8-oxo-,(6R,7R)-;7-(α-Amino-L-phenylacetamido)-3-deacetoxycephalosporanicacid;L-Cephalexin;(6R,7R)-7-[[(2S)-2-aMino-2-phenylacetyl]aMino]-3-Methyl-8-oxo-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicAcid;[6R-[6α,7β(S*)]]-7-[(AMinophenylacetyl)aMino]-3-Methyl-8-oxo-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicAcid;7-(α-AMi;CefalexinimpurityL