扁桃酸

Mandelic acid tends to be very well tolerated, especially compared to other alpha hydroxy acids such as glycolic acid.

扁桃酸往往是非常很好的耐受性，特别是比起其他阿尔法羟基酸如乙醇酸。

Alpha hydroxy acids – include glycolic acid, mandelic acid, malic acid, lactic acid.

阿尔法羟基酸-包括乙醇酸，扁桃酸，苹果酸，乳酸。

Benzoylformic acid ; D-mandelic acid ; Colorimetry

苯乙酮酸； D-扁桃酸；分光光度法分析

Mandelic acid is of particular benefit in those with darker complexions, where hyperpigmentation may occur with ingredients such as hydroquinone or glycolic acid.

扁桃酸是特别有益的，在那些黑暗的complexions ，色素沉着，可能会发生与成分，如对苯二酚或乙醇酸。

Mandelic acid is of particular benefit in those with darker complexions, where hyperpigmentation may occur with ingredients such as hydroquinone or glycolic acid.

扁桃酸是特别有益的，在那些黑暗的complexions ，色素沉著，可能会发生与成分，如对苯二酚或乙醇酸。

Mandelic acid has the advantage of being a larger sized molecule compared to most other alpha hydroxy acids, including one of the more widely used ones, glycolic acid.

扁桃酸具有的优势，作为一个较大规模的分子相比，大部分其他α羟基酸，其中包括更广泛使用，乙醇酸。

As an intermediate for preparing vanillin derived from glyoxylic acid, 3, 4-dihydroxymandelic acid is synthesized based on condensation of catechol and glyoxylic acid in alkaline aqueous solution.

以邻苯二酚和乙醛酸为原料，在碱性条件下发生缩合反应，合成了3， 4-二羟基扁桃酸，此物质是多种香料和药物合成的重要中间体。

Since 2002, Institute of Coal Chemistry, Chinese Academy of Sciences has been developing a new technology to prepare high-purity glyoxylic acid by maleic anhydride ozonation, which has been completed, and now the research of the downstream products of glyoxylic acid including vanillin, heliotropin and the substituted mandelic acid is underway.

中科院山西煤化所从2002年开始进行研究，完成顺酐臭氧化法制备高纯乙醛酸新技术工艺的开发，现正进行乙醛酸下游产品香兰素、洋茉莉醛、取代扁桃酸的技术研究。

The synthesis of methyl mandelate catalyzed by dodetungstophosphoric acid supported on modified silica gel with 3-aminopropyltriethoxysilane (HPW/M-SiO2) has been studied.

γ-氨丙基三乙氧基硅烷修饰的硅胶负载磷钨酸(HPW/M-SiO2)催化剂催化合成扁桃酸甲酯。

In the third step, when the ratio of racemic ester to benzenesulfonyl chloride to triethylamine to catalyst 4-DMAP is 1:1:1:0.1 in 10℃, the yield is 82.9% and high purity is obtained by crystallisation.

在第三步磺酰化反应中，得到合成消旋2-苯磺酸基-2(2-氯苯基)乙酸甲酯的较佳反应条件为邻氯扁桃酸甲酯：苯磺酰氯：三乙胺=1：1：1，催化剂4-DMAP用量为摩尔反应物的10%，反应温度为10℃，收率为82.9%，同时用结晶方法获得高纯度的产物。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。