Nonadecanoyl-L-carnitine is a long-chain acylcarnitine composed of nonadecanoic acid (Item No. 19723) and L-carnitine (Item No. 21489). Serum levels of nonadecanoyl-L-carnitine are decreased in children and adolescents chronically exposed to industrial carcinogenic pollutants.1WARNING This product is not for human or veterinary use.