Method of purifying carnitines L-

文件类型：PDF文档
文件大小：113K
Methods which yield L-carnitine having a large particle diameter and hence having reduced hygroscopicity and by which L-carnitine can be purified to a high purity. One of the methods for purifying L-carnitine is characterized by dissolving crude L-carnitine crystals in a mixed solvent comprising a lower alkyl alcohol and water and then recrystallizing the L-carnitine. The other comprises dissolving crude L-carnitine crystals in a mixed solvent comprising a lower alkyl alcohol and water and then adding an organic solvent other than the lower alkyl alcohol to recrystallize the L-carnitine.