Tyloxapol

Tyloxapol (CAS No.: 25301-02-4) is a nonionic liquid polymer belonging to the alkyl aryl polyether alcohol class, widely employed in biochemical and pharmacological research as a surfactant and dispersion stabilizer. Functionally, it modulates lipid metabolism by inhibiting lipoprotein lipase activity, thereby preventing the clearance of triglyceride-rich lipoproteins and leading to transient elevations in circulating lipid levels. This property underlies its extensive use in the establishment of experimental hyperlipidemia models in animals for the investigation of lipid metabolism, atherosclerosis-related pathways, and lipid-lowering drug candidates. Although it does not act through a classical receptor-mediated mechanism, its biological effects are associated with interference in lipid processing pathways and plasma lipoprotein turnover. In vitro and in vivo studies typically employ concentrations or dosing regimens tailored to specific experimental objectives, often within ranges sufficient to achieve robust inhibition of lipid clearance without overt toxicity. Tyloxapol is therefore a valuable tool compound in preclinical research for probing lipid homeostasis, evaluating metabolic interventions, and supporting drug discovery efforts targeting dyslipidemia-related pathways.