磺酸

The coating has good physic-mechanical feature and is easy to application, replacing the alkyd and chlorosulfonated polyethylene coating.

具有良好的物理机械性和良好的施工性，是醇酸、氯磺化聚乙烯等涂料的更新换代产品。

Synthesis of novel sulfonamide-prolinols and their application on the asymmetric addition of diethylzinc to benzaldehyde.

三、研究了脯氨酸衍生的新型手性磺酰胺-氨基醇的合成及其催化二乙基锌对苯甲醛的不对称加成反应 1。

The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我们以蒈醛酸内酯为起始原料，经过氧化反应、酰氯化反应得到顺式环丙烷二酰氯，然后在二环己基碳二亚胺的催化下与相应的氨基醇反应合成了顺式二羟基酰胺，再用对甲苯磺酰氯将羟基活化，最后在二甲氨基吡啶的催化下关环合成顺式双噁唑啉配体L1～L4。

The intermediate of flazasulfuron weedicide ,2-amino-4,6-dimethoxypyrimidineis conveniently obtained by treating 2-amino-4,6-dihydroxypyrimidinewith diazomethane at 20 °C for 24h.

本文利用硝酸胍和丙二酸二乙酯为起始原料，经环合及甲氧基化两步反应得到除草剂啶嘧磺隆的中间体：2-氨基-4，6-二甲氧基嘧啶。

Determination of the equilibrium constant of a coordinated compound.

四、铁离子与磺基水扬酸配合物的组成和标准稳定常数的测定，了解用比色法测定配合物的组成和配离子稳定常数的原理和方法，掌握分光光度计的使用及有关试验数据的处理方法。

P28 紫色 Formation of a peptide bond 肽键形成–4侧链具有的反应–形成二硫键-其它反应 Tyr,His,Arg Review Isoelectric Point Titration滴定 of an amino acid 滴定 Gly幻灯片 18 His Lys Glu Reaction of amino acids Section 4 Protein isolation and purification 蛋白质分离及提纯 Working With Proteins Experimental techniques for protein analysis and characterization Purification steps A cell contains many types of proteins In the lab we want to isolate a single protein for experiments Purification steps We first grow cells or isolate tissues that contain the protein of interest We break open the cells to produce a crude extract Use centrifugation离心 to separate soluble from insoluble material We fractionate 分离 the protein mixture based on properties of such as size, charge affinity or solubility.

丹磺酰氯与氨基酸反应生成荧光性质强和稳定的磺胺衍生物，用于多肽链NH 用于多肽链 3末端氨基酸的标记烃基化反应(1) 2，4-二硝基氟苯2，4-dinitrofluorobenzene，二硝基氟苯(二硝基氟苯 DNFB也叫做试剂。DNFB在弱碱性溶液也叫做Sanger试剂试剂中与氨基酸发生取代反应，生成黄色化合物二硝基二硝基苯基氨基酸(dinitro phenyl amino acid， DNP氨基酸氨基酸)苯基氨基酸氨基酸(2)苯异硫氰酸酯(phenylisothiocyanate， PITC)在弱碱性条件下，与氨基酸反应在弱碱性条件下，生成苯乙内酰硫脲 PTH衍生物，(phenylthiohydantoin， PTH)衍生物，即PTH-氨基酸，此反应又称之Edman反应，该反应是蛋白质或多肽氨基酸序列测定常用的反应。

Methods the all cells were divided into four groups: control group, p-tosyl-l-phenylalanine chloromethyl ketone group, dexamethasone group, cotreatment group.

分组：对照组、对甲苯磺酰-l-苯丙氨酸甲基甲酮组、地塞米松组、tpck+dex组。mtt比色分析法测定细胞生长抑制率，流式细胞术测定细胞凋亡率。

Ingredients: lemon extract, honey,whitening_factor,moisturizing-factor,lauric acid, tetradecanoic acid, gydroxysulfobetaine, distearic acid glycol ester.

成分：柠檬提取液，蜂蜜，美白因子，保湿因子，月桂酸，肉豆蔻酸，羟磺基甜菜碱，乙二醇双硬脂肪酯。

Ingredients: honey extract , whitening_factor,moisturizing-factor,lauric acid, tetradecanoic acid, gydroxysulfobetaine, distearic acid glycol ester.

成分：柠檬提取液，蜂蜜，美白因子，保湿因子，月桂酸，肉豆蔻酸，羟磺基甜菜碱，乙二醇双硬脂肪酯。

A base-catalyzed novel olefination methodology based on elimination of p-toluenesulfonamide:Treatment of diethyl cyanomethylphosphonate with catalytic amount of basegave the corresponding phosphoryl-stabilized carbanion, which added to the carbon-nitrogen double bond of N-tosyl imines.

新形成的氮负离子进一步攫取另一分子膦酸酯的活泼亚甲基氢形成加成产物同时再生出膦酰基稳定的碳负离子。加成产物消除对甲苯磺酰胺，高度立体选择性地得到-α-氰基-β-芳基-乙烯基膦酸二乙酯。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。