29126-12-3

(7R)-7-(Phenylacetylamino)-3-methylcepham-3-ene-4-carboxylic acid diphenylmethyl ester diphenylmethyl (6R-trans)-3-methyl-8-oxo-7-(phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate diphenylmethyl (6R-trans)-3-methyl-8-oxo-7-(phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (6R,6β)-3-Methyl-8-oxo-7α-[(phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester