Synonyms: 4-Carbamoyl-1-[[2-carboxy-8-oxo-7-[2-(2-thienyl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]pyridiniumhydroxide, inner salt (7CI);Pyridinium,4-(aminocarbonyl)-1-[[(6R,7R)-2-carboxy-8-oxo-7-[(2-thienylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-,inner salt (9CI);Pyridinium,4-(aminocarbonyl)-1-[[2-carboxy-8-oxo-7-[(2-thienylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-,hydroxide, inner salt, (6R-trans)-;Pyridinium,4-carbamoyl-1-[[2-carboxy-8-oxo-7-[2-(2-thienyl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-,hydroxide, inner salt (8CI);3-(4-Carbamoylpyridylmethyl)-8-oxo-7-[a-(thien-2-yl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid;7-(a-Thienylacetamido)-3-(4-carbamoylpyridinomethyl)-3-cephem-4-carboxylicacid;Cefalonium;Cepalonium;Cephalonium;Cepravin DC;Cepravin Dry Cow;Pyridinium,4-(aminocarbonyl)-1-[[2-carboxy-8-oxo-7-[(2-thienylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-,inner salt, (6R-trans)-;