Keywords: Penicilloic acid.png en Antigenic metabolite of penicillin 2014-06-23 16 23 23 http //pubchem ncbi nlm nih gov/summary/summary cgi sid 111978163 viewopt PubChem National Center for Biotechnology Information U S National Library of Medicine PD-USGov Uploaded with UploadWizard Carboxylic acids Thiazolidines Formamides |