Also available in 5 mg, 10 mg, 25 mg, 50 mg, 100 mg and bulk. Please contact Fisher for quotes. Durlobactam sodium salt (ETX2514) is a beta-lactamase inhibitor with IC50 values of 4 nM, 14 nM and 190 nM against class A KPC-2, class C AmpC and class D OXA-24. Purity 99.03%