3-(acetoxymethyl)-7α-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

3-[[(6R,7S)-7-methoxy-5,5,8-trioxo-2-(pyrrolidine-1-carbonyl)-5λ⁶-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methylsulfanyl]-2-methyl-1H-1,2,4-triazine-5,6-dione

N-((6R,7S)-3-(((benzylcarbamoyl)oxy)methyl)-7-methoxy-5,5-dioxido-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl)-N-methylglycine

methyl 3-(acetoxymethyl)-7α-methoxy-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxylate 5,5-dioxide

Acetic acid (6R,7S)-2-benzylcarbamoyl-7-methoxy-5,5,8-trioxo-5λ6-thia-1-aza-bicyclo[4.2.0]oct-2-en-3-ylmethyl ester

Glycine,N-[[7-methoxy-5,5-dioxido-8-oxo-3-[[[[(phenylmethyl)amino]carbonyl]oxy]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-en-2-yl]carbonyl]-N-methyl-,1,1-dimethylethyl ester, (6R-cis)-

N-((6R,7S)-3-(acetoxymethyl)-7-methoxy-5,5-dioxido-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl)-N-methyl-D-alanine

(6R,7S)-3-Acetoxymethyl-7-methoxy-5,5,8-trioxo-5λ6-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 3-methoxycarbonyl-benzyl ester

(6R,7S)-3-(chloromethyl)-7-methoxy-2-(pyrrolidine-1-carbonyl)-5-thia-1-azabicyclo[4.2.0]oct-2-en-8-one 5,5-dioxide

tert-butyl ((6R,7S)-3-(acetoxymethyl)-7-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl)-L-prolinate

N-((6R,7S)-3-((benzoyloxy)methyl)-7-methoxy-5,5-dioxido-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl)-N-methylglycine

N,N-dimethyl-3-(acetoxymethyl)-7α-methoxy-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxamide 5,5-dioxide