分离游离香豆素和香豆素苷类的首选溶剂是A:丙酮 B:热乙醇 C:热稀碱水 D:沸水 E:乙醚

作者: tihaiku 人气: - 评论: 0
问题 分离游离香豆素和香豆素苷类的首选溶剂是
选项 A:丙酮 B:热乙醇 C:热稀碱水 D:沸水 E:乙醚
答案 E
解析 游离香豆素类成分易溶于乙醚、氯仿、乙醇、甲醇等有机溶剂,也能部分溶于沸水,但不溶于冷水。香豆素苷类成分易溶甲醇、乙醇,可溶于水,难溶于乙醚、氯仿等低极性有机溶剂。

相关内容:分离,香豆,素和,苷类,溶剂,丙酮,乙醇,热稀,碱水,沸水,乙醚

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