α-Lipoic acid (ALA) is an organosulfur compound featuring a five-membered 1,2-dithiolane ring and a distinctive amphiphilic distribution profile. It can undergo a reversible redox cycle between oxidized lipoic acid and reduced dihydrolipoic acid (DHLA). This structure–function coupling underpins ...
Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and redox transition metal ions such as iron, copper and cadmium.