Hexacosanoic Acid

Hexacosanoic Acid (CAS No.: 506-46-7) is a saturated very-long-chain fatty acid widely distributed in biological systems as a component of complex lipids and cellular membranes, where it contributes to membrane organization and lipid homeostasis. It is primarily studied in the context of peroxisomal metabolism, as its catabolism depends on peroxisomal β-oxidation pathways, and dysregulation of these processes leads to pathological accumulation. Elevated levels of hexacosanoic acid are strongly associated with disorders such as X-linked adrenoleukodystrophy and adrenomyeloneuropathy, as well as metabolic and cardiovascular conditions including atherosclerosis and metabolic syndrome, making it a relevant biomarker for disease progression and metabolic dysfunction. Mechanistically, its accumulation is linked to impaired peroxisomal transporter function and altered lipid signaling, which can disrupt cellular homeostasis, induce oxidative stress, and affect inflammatory pathways implicated in neurodegeneration and vascular pathology. In experimental settings, hexacosanoic acid is commonly used to model lipid metabolic defects and to investigate the impact of very-long-chain fatty acid accumulation on cellular physiology, particularly in neuronal and glial cell systems as well as in animal models of peroxisomal disorders. While specific potency metrics are not typically defined for this endogenous lipid, in vitro studies generally employ concentrations in the low micromolar to higher ranges depending on the model system, and dosing strategies in vivo vary according to study design. Its utility in biomedical research extends to biomarker discovery, mechanistic studies of lipid dysregulation, and the evaluation of therapeutic strategies targeting peroxisomal function and lipid metabolism.