3'-Decarbamoylcefoxitin

(7S)-3-(Hydroxymethyl)-7-[(2-thenylcarbonyl)amino]-7-methoxycepham-3-ene-4-carboxylic acid

(6R-cis)-3-(hydroxymethyl)-7-methoxy-8-oxo-7-(2-thienylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,6β)-3-Hydroxymethyl-7β-methoxy-8-oxo-7-[[(2-thienyl)acetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid