Moxalactam sodium salt (CAS 64953-12-4) is a small-molecule -lactam antibiotic belonging to the oxacephem subclass It is designed to inhibit bacterial cell wall biosynthesis by targeting penicillin-binding proteins (PBPs) Moxalactam sodium salt exerts its biological activity by interfering with PBPs thereby preventing cell wall synthesis In in vitro studies Moxalactam sodium salt demonstrates broad-spectrum inhibition of various Gram-positive Gram-negative and anaerobic bacteria including Klebsiella pneumoniae Escherichia coli Haemophilus influenzae and Neisseria gonorrhoeae Typical MIC values for susceptible organisms are generally in the low microgram-per-milliliter range Based on these pharmacological properties Moxalactam sodium salt holds research potential in antibacterial susceptibility assays studies on antibiotic resistance mechanisms and investigations of bacterial cell-wall synthesis pathways