A method for purifying substances using a chromatographic column
一种层析柱、化合物的技术,应用在化学仪器和方法、有机化学、糖衍生物等方向,能够解决废混合溶剂不易处理、溶剂使用量大、纯化效率不高等问题,达到回用准确又、回用方便简单、减少开支的效果
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[0042] Take 200g of the final crude product of fucoside, and measure its purity to be 40%, carry out chromatographic column purification, and change the polarity by changing the density of the eluent for elution.
[0043] (1) Initially use an eluent with a density of 0.65 to remove the top impurity 1 ( figure 1 The impurity point 1) in the impurity point 1), the obtained impurity 1 has a mass of 22g;
[0044] (2) Then slightly increase the polarity of the eluent, and the size of the gradient increases. The density increases slowly from 0.65-0.678, increasing the polarity by 0.002 each time. Adjust the TLC point of the column effluent after changing the density each time. Board conditions to determine. If the spot on the TLC plate does not change after adjusting the polarity, increase the density again; if the TLC spot plate changes after adjusting the density, then use the eluent of this density to pass through the column, and each time the polarity changes It is determined...
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