DescriptionCephalosporinCoreStructure.svg English: This is a corrected version of the cephalosporin chemical structure (I switched the R1 and R2 groups)
DescriptionCephalosporincorestructure.svgCorestructure of the cephalosporin antibiotics. Created using ACD/ChemSketch 10.0 and Inkscape. Date 23 August
File:Cephalosporincorestructure.svg is a vector version of this file. It should be used in place of this PNG file when not inferior. File:Cephalosporin-nucleus