14411-77-9 27910-29-8 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-(((acetyloxy)phenylacetyl)amino)-8-oxo-, (6R-(6alpha,7beta))- 7-Pdca 7-Phenylacetamidodeacetoxycephalosporanic acid 7-Phenylacetamidodesacetoxycephalosporanic acid delta(3)-7alpha-Phenylacetamidodesacetoxycephalosporanic