7-phenylacetamide-3-hydroxy-3-cephem-4-carboxylic acid diphenylm

α-[[[2-Furanylcarbonyl)aminol]carbonyl] aminol]benzeneacetic aci


6-methyl-4-Hydroxy-pyridinecarboxylic acid


3-Methanesulfonyl-2-oxo-imidazolidine-1-carbonyl chloride




N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine
