L-Propionylcarnitine (chloride)

L-Propionylcarnitine (chloride) (CAS No.: 119793-66-7) is a carnitine derivative synthesized via carnitine acetyltransferase during the β-oxidation of odd-chain fatty acids. In biomedical research and drug development, this compound is mainly used to study conditions such as renal function deterioration, congestive heart failure, and intermittent claudication. Biologically, it acts by increasing the release of prostaglandin E2 and 6-keto-prostaglandin F1α in primary cells under stimulated conditions, and affects the production of thromboxane B2 in an uncontaminated cellular environment. Notably, L-Propionylcarnitine can reduce the generation of reactive oxygen species and downregulate the expression of NADPH oxidase isoforms and ICAM-1 in endothelial cells, thereby potentially playing a protective role in preventing oxidative stress. In terms of mitochondrial function, it alleviates mitochondrial dysfunction by preventing calcium overload and ATP depletion under ischemic conditions. These properties have been explored in vitro and in vivo, with the concentrations or doses used depending on the specific experimental objectives of the cell models and animal studies, typically in the nanomolar to micromolar range, such as in rabbit hindlimb ischemia models.