BDM91531 

BDM91531 is a AcrB inhibitor with an EC₅₀ of 0.16 μM against E. coli. BDM91531 acts as an antibiotic potentiator to restore the sensitivity of wild-type Escherichia coli to multiple AcrB substrate antibiotics. BDM91531 exhibits antibacterial activity. BDM91531 can be used in the research of bacterial infections^[1].

BDM91531 (Compound 6) (4.5 h) potently enhances the activity of AcrB substrate antibiotics in wild-type E. coli BW25113 by inhibiting the AcrAB-TolC efflux pump, with an EC₉₀ of 0.24 μM against pyridomycin^[1].
BDM91531 (20 min) binds tightly to purified wild-type E. coli AcrB, induces its thermal stability, with a half-effective concentration of approximately 156 nM^[1].
BDM91531 (0-5 μM; 16 h) induces concentration-dependent growth inhibition in E. coli BW25113ΔacrB complementarily expressing wild-type AcrB in the presence of Erythromycin (HY-B0220), and its activity depends on the negatively charged residues (E947, D951) at the cytoplasmic rim of AcrB^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

352.86

C₂₀H₂₁ClN₄

2892824-73-4

NCC1=CC(C(C=C2)=CC3=C2N=C(N4CCNCC4)C(Cl)=C3)=CC=C1

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Börnsen C, et al. Molecular mechanism of transition-state inhibitors of bacterial antibiotic efflux pumps. NPJ Antimicrob Resist. 2026;4(1):35. Published 2026 May 4.  [Content Brief]