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