2.
Name: Potassium (2S-(2alpha,5alpha,6alpha))-6-bromo-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate
CAS: 74772-27-3



4.
Name: 2-(4-chlorophenyl)-4-methyl-9-oxo-N-phenyl-7-thia-1,5-diazabicyclo[4.3.0]nona-3,5-diene-3-carboxamide
CAS: 5959-57-9


