DL-α-Lipoic Acid

DL-α-Lipoic Acid (CAS No.: 1077-28-7) is a small-molecule organosulfur compound widely studied as a redox-active antioxidant and an essential cofactor for mitochondrial enzyme complexes involved in oxidative metabolism. Functioning through reversible interconversion between oxidized and reduced forms, it plays a central role in modulating intracellular redox balance, regulating oxidative stress responses, and supporting cellular energy metabolism. Mechanistically, DL-α-Lipoic Acid scavenges reactive oxygen species, influences glutathione-dependent antioxidant pathways, and exhibits metal ion chelation properties, while also modulating signaling pathways such as insulin-related cascades and NF-κB-mediated transcriptional activity. In addition, it has been shown to induce endoplasmic reticulum stress-associated apoptosis in certain tumor cell models and to participate in the design of self-assembled nanoformulations for enhanced bioactivity in experimental systems. In vitro studies typically report biological activity in the low micromolar to millimolar range depending on assay conditions and cell type. This compound is commonly utilized in biochemical and cellular research investigating mitochondrial dysfunction, redox biology, metabolic regulation, and neurodegenerative or metabolic disorder-related pathways, with experimental concentrations or dosing regimens varying according to specific study designs and objectives.