butyryl-l-carnitine (chloride) (L-Butyrylcarnitine, CAR 4:0, C4:0 Carnitine, L-Carnitine butyryl ester, CAS Number: 162067-50-7) This study by Mani MS et al Isobutyryl-L-carnitine chloride | CAS 6920-31-6
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