羟基酸

Their structures were identified by physico-chemical properties and spectral analysis. RESULTS Seven compounds were isolated as kaempferol,quercetin,astragalin,isoquercitrin,kaempferol-3-O-β-D-glucuronic acid methyl ester,4-hydroxybenzonic acid,hentriacontane.

结果分离得到7个已知化合物，分别为山柰酚、槲皮素、山柰酚-3-O-β-D-吡喃葡萄糖苷、槲皮素-3-O-β-D-吡喃葡萄糖苷、山柰酚-3-O-β-D-吡喃葡萄糖醛酸甲酯、对羟基苯甲酸、三十一烷。

One high-tech products 12 - hydroxy acid has a rigid technology patented by the National, provincial award of scientific and technological achievements, and its quality to meet or exceed the advanced level in the same industry at home and abroad.

其中高科技产品 12 －羟基硬质酸有一项技术获国家专利，省科技成果奖励证书，其质量均达到或超过国内外同行业先进水平。

In accordance with the process, the hydroxy carboxylic acid serves to temporarily transfer chlorine from and does not form a salt with the alkali metal salt of a chlorite ion.

根据本方法。羟基羧酸用作暂时转移氯，并且与亚氯酸根离子的碱金属盐不生成盐。

The prepolymers can be prepared having isocyanate, hydroxyl, or a variety of other reactive functional groups.

可以制备具有异氰酸酯、羟基、或各种其它反应官能团的预聚物。

Besides, The reaction of aldehydes with dithioacetate enethiolates followed by alkylation effectively gives α-hydroxyl ketene dithioacetals.

此外，用醛与硫代羧酸硫酯反应再通过烷基化也可以有效地获得α-羟基二硫缩烯酮类化合物。

As one of the most urgently needed medical intermediates, D-p-hydroxyphenylglycine is used mainly to produce β-lactam antibiotics.

D-对羟基苯甘氨酸主要用于合成β-内酰胺类半合成抗生素，是国内最紧缺的医药中间体之一。

There are four parts:In Part 1,an introduction of fluorescence of lanthanide complexes was given.

第四节中测定了羧酸铜二聚体与2—羟基吡啶中性加合物的结构。

RESULTS: Inverted microscopic observation showed that the PHBV fibers were fairly thick with weak lucency, and the fibers were hardly detectable under contrast phase microscope.

结果：倒置显微镜观察聚羟基烷酸酯纤维较粗，且透光性差，在相差显微镜下不易观察。

Lutetium ; 5-sulfo-8-quinolinoates ; CTMAB ; L*-L type fluorimetry ; fluorescence analysis

镥； 8-羟基喹啉-5-磺酸；十六烷基三甲基溴化铵； L*-L型荧光；荧光分析

Under the optimum condition, the maximum yield of more than 84% was obtained.

在最佳条件下，3-乙氧基-4-羟基苯乙醇酸的产率达84%以上。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。