Cefium

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:3506
http://www.genome.jp/dbget-bin/www_bget?cpd:C06888
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5281006
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504903
https://www.chemspider.com/Chemical-Structure.4444481.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=1546020
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=3506
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL276568
https://zinc.docking.org/substances/ZINC000003776970
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000447
http://www.pharmgkb.org/drug/PA164746342
http://www.rxlist.com/cgi/generic/cefprozi.htm
https://www.drugs.com/cdi/cefprozil.html
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/cef1077.shtml
https://en.wikipedia.org/wiki/Cefprozil