L-CARNITINE is a quaternary ammonium compounds biosynthesized from the amino acids lysine and methionine. It plays a critical role in the transport of long chain fatty acids into mitochondria for B-Oxidation. In research environments it is extensively studied for its impact on cellular energy metabolism, mitochondrial function, and oxidative stress modulation. Multiple forms or concentrations may be available to support studies across different models, from cell culture to isolated organ assays. Each L-Carnitine variant may differ in delivery method.