In human plasma and tissues, acetylcarnitine is the most predominant acylated ester of carnitine, which is an amino acid derivative that is made in the kidney, liver, and brain from lysine and methionine.
ໃນ plasma ຂອງມະນຸດແລະແພຈຸລັງ, acetylcarnitine ແມ່ນ ester acyl ເດັ່ນທີ່ສຸດຂອງ carnitine, ຊຶ່ງເປັນອະນຸພັນອາຊິດ amino ທີ່ເຮັດໃນຫມາກໄຂ່ຫຼັງ, ຕັບ, ແລະສະຫມອງຈາກ lysine ແລະ methionine.