monobactams are activated by sulfonic , phosphoric , or carboxyl groups , and their properties are related to the c-3-acyl side chain and their beta-lactamase stability to the c-4 grouping . beta-lactamase inhibitors acylated by beta-lactamases can be penicillanic acid derivatives or clavulanates .
C1373040
beta-lactamase
C0110038
clavulanates