cefotetan
cefotetan
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.