for the following products
Ceftazidime intermediate | Propanoic acid,2-[[[1-(2-amino-4-thiazolyl)-2-(2-benzothiazolylthio)-2-oxoethylidene]amino]oxy]-2-methyl-,1,1-dimethylethyl ester | TAEM and 2-Mercaptobenzolyl-(Z)-2-(2-aminothiazol-4-yl)-2-(2-tert-butoxycarbonylprop-2-oxyinacetate
