title: Mechanism of rearrangement of penicillin V (S)-sulfoxide into delta-2 and delta-3-cephem compounds.
mesh_terms: D002511:Cephalosporins; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D008698:Mesylates; D009578:Nitrobenzenes; D010404:Penicillin V; D013056:Spectrophotometry, Ultraviolet; D013454:Sulfoxides
chemical_list: D002511:Cephalosporins; D007202:Indicators and Reagents; D008698:Mesylates; D009578:Nitrobenzenes; D013454:Sulfoxides; D010404:Penicillin V