To provide an industrial method for producing a cationic lipid, which does not require a special equipment and by which a cationic lipid of high purity can be efficiently obtained. A cationic lipid represented by formula (1) is mixed with a tetraalkylammonium salt having X- in an organic solvent, and a filtrate obtained by separating a tetraalkylammonium iodide deposited by filtration is concentrated to deposit a tetraalkylammonium iodide, thereby obtaining a cationic lipid represented by formula (2):
提供一种生产阳离子脂质的工业方法,该方法不需要特殊设备,并能有效地获得高纯度的阳离子脂质。将式(1)表示的阳离子脂质与具有 X-的四烷基
铵盐在有机溶剂中混合,并将通过过滤分离沉积的四烷基
碘化铵而得到的滤液浓缩沉积四烷基
碘化铵,从而得到式(2)表示的阳离子脂质: