the transport of l-carnitine ( 50 microm ) was significantly inhibited by 500 microm d-carnitine , palmitoyl l-carnitine and deoxycarnitine but not by trimethylammonium iodide , trimethyl phosphate , acetyl-l-carnitine , choline , betaine , gamma-aminobutyric acid or dl-carnitinamide .
C0007258
carnitine
C0001040
acetyl-l-carnitine