Cephalosporin structures Hi Antony I see you ve been checking the stereochemistry on the cephalosporin structures and assigning proper IUPAC names for them The thing is I personally checked each of them and the structures actually do appear to match the stereochemistry at least using the ACD name generator am I missing something Thank you again for your massive curation efforts and please know that I for one am wholeheartedly committed to making sure each and every one of my structures is accurate t c