5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-amino-3-(methoxymethyl)-8-oxo-, (6R,7R)-
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-amino-3-(methoxymethyl)-8-oxo-
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-amino-3-(methoxymethyl)-8-oxo-, (6R-trans)-
(6R,7R)-7-Amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
7-Amino-3-methoxymethyl-Δ3-cephem-4-carboxylic acid
7-Amino-3-(methoxymethyl)-3-cephem-4-carboxylic acid
(6R,7R)-7-Amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid