Keywords: Cephemcore.png Core structure of cephamycins own 2005-12-19 Farseer PD-chem Farseer Original upload log page en wikipedia Cephemcore png 2005-12-19 23 18 Farseer 184×193× 2106 bytes <nowiki>Core structure of cephamycins Author Farseer using PubChem </nowiki> Cephalosporin C deacetylase |