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What do we learn about Lore's founders?

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Concerning the prospect of Lore, Mr. Cohen expects it to

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Emerson反应呈阴性的香豆素有

Emerson反应呈阴性的香豆素有 A.6,7-呋喃香豆素 B.6,7-二羟基香豆素 C.6-甲氧基香豆素 D.7,8-二羟基香豆素 E.7,8-呋喃香豆素

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用聚酰胺柱色谱分离①黄酮三糖苷、②黄酮双糖苷、③黄酮单糖苷和④黄酮苷元4个化合物,用水一乙醇梯度洗脱,化合物被洗脱的先后

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