(3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-oneCAS NO.: 76855-69-1
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, 7-[[(2R)-2-amino-2-(1,4-cyclohexadien-1-yl)acetyl]amino]-3-methyl-8-oxo-,(6R,7R)-CAS NO.: 38821-53-3
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2- carboxylic acid,7-[[(2-amino-4-thiazolyl)- acetyl]amino]-3-[[[1-[2-(dimethylamino)- ethyl]-1H-tetrazol-5-yl]thio]methyl]-8-oxo-,1-[[(cyclohexyloxy)carbonyl]oxy]eCAS NO.: 95789-30-3
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid,7-[[2-(3,5-dichloro-4-oxo-1(4H)-pyridinyl)acetyl]amino]-3-[[(5-methyl-1,3,4-thiadiazol-2-yl)thio]methyl]-8-oxo-,sodium salt (1:1), (6R,7R)-CAS NO.: 63521-15-3
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2Z)-2-(2-amino-4-thiazolyl)-2-(methoxyimino)acetyl]amino]-3-[[[5-(carboxymethyl)-4-methyl-2-thiazolyl]thio]methyl]-8-oxo-, (6R,7R)-CAS NO.: 69739-16-8