Carnitine is a quaternary amine that occurs naturally in most mammalian tissue. Carnitine is present in relatively high concentrations in skeletal muscle and heart where it is involved in regulating energy metabolism. It has also been used to allow the en
Linoleoyl-L-carnitine is a naturally occurring long-chain acylcarnitine. Hepatic levels of linoleoyl-L-carnitine are increased following high-dose (200 mg kg) administration of isoniazid in mice.
Isovaleryl-L-carnitine is a naturally occurring acylcarnitine that is formed via metabolic conversion of L-leucine. It increases survival and decreases apoptosis in hepatocyte growth factor-deprived murine C2.8 hepatocytes when used at a concentration of 1 mM. Isovaleryl-L-carnitine inhibits amino acid deprivation-induced proteolysis and autophagy in isolated perfused rat liver when used at concentrations of 77 and 100 μM, respectively. Increased levels of isovaleryl carnitine are associated with isovaleryl-CoA dehydrogenase deficiency (isovaleric acidemia).
Decanoyl-L-carnitine is an ester derivative of L-carnitine . It increases the formation of C24 fatty acid intermediates, as well as docosapentaenoic and docosahexaenoic acid in rat hepatocytes.
Butyryl-L-carnitine is a butyrate ester of carnitine. It is an inhibitor of intestinal transporters, blocking carnitine uptake by the carnitine transporter and glycine transport by the amino acid transporter in human retinal pigment epithelial (HRPE) cells (IC50s = 1.5 μM and 4.6 mM, respectively).
Hexanoyl-L-carnitine is a medium-chain acylcarnitine. It has been used in the synthesis of acylcarnitine benzyl esters.1 1.Gong, X.-w., Li, J.-p., Wu, J.-f., et al.Synthesis of carnitine benzyl esters as prodrugsJ. Chem. Res.2008(6)327-330(2008)
Valeryl-L-carnitine is a short-chain acylcarnitine and a derivative of L-carnitine . Valeryl-L-carnitine levels increase in the serum of rhesus monkeys following exposure to 7 and 10 Gray units (Gy) of ionizing radiation.[1]