Flucloxacillin sodium

Flucloxacillin sodium (CAS No.: 1847-24-1) is a semisynthetic beta lactam antibacterial small molecule in the isoxazolyl penicillin class, widely used in life sciences as a reference antibacterial agent for studies of Gram positive and selected Gram negative bacterial susceptibility, cell wall biosynthesis inhibition, and resistance evolution under controlled laboratory conditions; as the sodium salt form of flucloxacillin, it is generally categorized in anti infective and microbiology research workflows, where its primary mechanism is the covalent acylation of bacterial penicillin binding proteins involved in peptidoglycan cross linking, leading to disruption of cell wall assembly and downstream activation of stress response networks associated with envelope damage, while the antibacterial effect profile reported for this class is typically represented through minimum inhibitory concentration readouts in the low micromolar to high micromolar range depending on organism, inoculum, and media composition, and thus it is commonly applied in in vitro broth microdilution assays, time kill and checkerboard interaction studies, resistance selection paradigms, and mechanistic profiling of beta lactam tolerance, with additional use in preclinical infection biology models and translational pharmacology benchmarking frameworks where the concentrations or doses used in experiments typically depend on specific experimental designs and research objectives.