has role cefotetan (6R,7S)-7-(4-(carbamoylcarboxymethylene)-1,3-dithiethane-2-carboxamido)-7-methoxy-3-(((1-methyl-1H-tetrazol-5- yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2- carboxylic acid Cefotetan cefotetan chebi_ontology CHEBI:3499 CHEBI:558729 A semi-synthetic second-generation cephamycin antibiotic with [(1-methyl-1<em>H</em>-tetrazol-5-yl)sulfanyl]methyl, methoxy and {[4-(2-amino-1-carboxy-2-oxoethylidene)-1,3-dithietan-2-yl]carbonyl}amino groups at the 3, 7α, and 7β positions, respectively, of the cephem skeleton. It is resistant to a wide range of β-lactamases and is active against a broad spectrum of aerobic and anaerobic Gram-positive and Gram-negative microorganisms. antibacterial drug cephamycin cefotetan(2-)