Cephaloglycin(anhydrous)

(6R,7R)-7-[(R)-2-Amino-2-phenylacetylamino]-3-(acetoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-3-(acetyloxymethyl)-7-[[(2R)-2-amino-2-phenylacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-3-(acetoxymethyl)-7-[[(2R)-2-amino-2-phenyl-acetyl]amino]-8-keto-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid