香豆素

Objective To establish a high performance liquid chromatographic method for determination of 6-methyl coumarin in cosmetics.

目的建立化妆品中6-甲基香豆素的高效液相色谱测定方法。

Secondly, extraction method of coumarin from melilotus was investigated.

其次，对草木樨中的香豆素进行了提取方法的研究。

ABSTRACT: Objective To study the antitumor activity of noviose and coumarin in novobiocin.

目的 研究新生霉素的结构单元诺维糖和香豆素的抗肿瘤活性。

Thirdly, extraction method of coumarin from melilotus in the method of solvent was studied.

再次，重点研究了系统溶剂法提取草木樨中的香豆素。

By this way, the yield of the product was about 0.5%, and the content of coumarin was about 20%.

所得到的得粗提物，其收率约0.5%，香豆素含量在20%左右。

The method of coumarin synthesis using salicylaldehyde was selected,flow chart and operation process were studied in this paper.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

Objective To establish a method for determination of the content of total coumarin in Chuanminshen viloaceum.

目的 建立川明参药材中总香豆素含量测定方法。

Both of them have higher fluorescence intensity than coumarin, and they can response to trace TNT, though not very obviously.

这两种物质的荧光强度比香豆素有很大的增强，当和TNT作用时，有一定的荧光响应性。

Ultraviolet and fluorescence spectra were used to evaluate the coumarin C.

用紫外和荧光光谱等手段对该香豆素衍生物进行表征。

Coumarin could respond to light to form dimmer, widely applied in light-controlled release of drugs and design of drugs.

由于香豆素在光照下可进行可逆的聚合及解离，在可控的药物释放、药物设计等方面有广泛的应用。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失