| —— | (4R,3S)-4-(Chloroacetyl)thio-3-(2-methyl-allyl)-1-<1-(pivaloyloxymethylcarbonyl)-2-methyl-1-propenyl>-azetidin-2-one | 164034-07-5 | C20H28ClNO6S | 445.964 | 
                                                                                                                                            
                                        | —— | 2,2-dimethylpropanoyloxymethyl 3-methyl-2-[(3S,4R)-3-(2-methylprop-2-enyl)-2-oxo-4-(2-phenylacetyl)sulfanylazetidin-1-yl]but-2-enoate | 164034-08-6 | C26H33NO6S | 487.617 | 
                                                                                                                                            
                                        | —— | [2-oxo-2-[(3S,4R)-2-oxo-3-(2-oxopropyl)-4-(2-phenylacetyl)sulfanylazetidin-1-yl]acetyl]oxymethyl 2,2-dimethylpropanoate | 164034-09-7 | C22H25NO8S | 463.508 | 
                                                                                                                                            
                                        | —— | Pivaloyloxymethyl (5R,6S)-6-(2-oxo-propy)-3-(1-N-methyl-tetrazol-2-yl)thiomethyl-7-oxo-4-thia-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate | 164034-12-2 | C18H23N5O6S2 | 469.543 | 
                                                                                                                                            
                                        | —— | 2,2-dimethylpropanoyloxymethyl (5R,6S)-3-(chloromethyl)-7-oxo-6-(2-oxopropyl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | 164034-10-0 | C16H20ClNO6S | 389.857 | 
                                                                                                                                            
                                        | —— | 2,2-dimethylpropanoyloxymethyl (5R,6S)-3-benzyl-7-oxo-6-(2-oxopropyl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | 164034-11-1 | C22H25NO6S | 431.51 |