esters

The major aromas were hexylic acid ethyl ester, benzyl ethanol, octylic acid and octylic acid ethyl ester.

主体风味成分是己酸乙酯、苯乙醇、辛酸和辛酸乙酯。

By using phase transfer catalyst, the yield of the preparation of cyclopropane carboxylic isopropyl ester was increased.

在环丙甲酸异丙酯成应中,通过相转移催化剂提高了应收率。

The research provided the applicable functional monomer leading urethano into acrylic ester.

为将氨酯基团引入丙烯酸树脂提供了可用官能单体。

The toxicity effect of 6 carbamic ester pesticides on Anabaena flos-aquae was studied.

以水华鱼腥藻为材料研究了6氨基甲酸酯类农药对藻类毒性效应。

Dicyclohexylcarbodiimide (DCC) is widely used in the reaction for synthesis of esters and amides as a condensation agent.

二环己基碳二亚胺(DCC)是酯化、酰胺化等应常用脱水剂,用DCC脱水,应条件温和,成收率通常较高。

The content of xanthophyl fatty acid ester obtained is 70-80%, wherein the content of all-trans xanthophyl ester is 90-95%.

用本发明方法得到叶黄素脂肪酸酯含量为70～80％，其中全式叶黄素酯达90～95％。

The results revealed that there was the toxicity effect of 6 different carbamic ester pesticides on Anabaena flos-aquae.

结果发现,6氨基甲酸酯类农药对水华鱼腥藻都有不同程度毒性作用。

Tannase hydrolyses the ester bonds and depside bonds in gallic acid tannins to release gallic acid and glucose.

摘要单宁酶可水解没食子酸单宁中酯键和酚羧键，生成没食子酸和葡萄糖。

Ingredient: KL sublimation medicinal preparation 80%, dextrorotary alkyne fifth heavenly stem chrysanthemum ester 2-3%, function medicinal preparation 1- 3%.

KL升华剂80%，右旋炔戊菊酯2-3%，功能剂1- 3%。

Atropine is a specific antidote for the cardiovascular collapse that may result from the injudicious administration of a choline ester.

阿托品是治疗由于用胆碱酯类不慎而引起心血管性虚脱特效解毒剂。

The cold-fust of the plasticzing agent that use it as material is better than the ester of Butanone and Octanol.

以它为原料增塑剂耐寒性优于丁醇和辛醇酯类。

The ore sample was dissolved in nitric acid.After enrichment and separation with Xanthic ester cotton,the silver was determined by thiocyanometry.

该方法用硝酸溶解样品,黄原酯棉富集分离,以硫氰酸盐滴定法进行测定。

It is found that incorporation of a trifunctional carboxylic ester or silane coupling agent can improve the adhesion of coatings on glass.

实验发现加入定量三官能团酸酯或硅烷偶联剂可以显著提高紫外光固化玻璃涂膜对玻璃附着力。

The results showed that the main compound categories of aromatic components were alcohols, esters, terpenes and ketones for all half-highbush blueberry cultivars.

结果表明，半高丛越橘以醇类、酯类、萜类和酮类物质为主。

A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

通过元羧酸和二乙烯基醚应,我们得到了新颖酯醛结构分子玻璃。

There are two reactive groups, amino and butoxy in the borate ester molecule.The structure of the borate ester was characterized by IR spectrum.

［中文文摘］通过分子结构设计,成了氮-硼内配位结构硼酸酯偶联剂,解决了硼酸酯水解稳定性差问题,同时分子结构中含有氨基、丁氧基等活性基团。

Archaean cell walls lack murein, a common component of bacterial cell walls, and their lipids have ether links rather than ester links.

古细菌细胞壁缺乏细菌细胞壁组成普遍物质-胞壁质，其连接是醚连接而不是酯连接。

Tussore oil was extracted by chemical .The fatty acid (FA) in tussore oil was saponificated and modified to methyl esters by different means .

研究了脂肪油衍生化、三氟化硼、硫酸3不同方法对脂肪油皂化、甲酯化效果,并用GC/MS法对柞蚕中脂肪酸成分进行了鉴定和分析。

Flame retardant vinyl ester resin using tetrabromo bisphenol A, epichlorohydrin, acrylic acid as raw materials was also synthesized, Its flame retardant property was excellent.

用四溴双酚A、环氧氯丙烷和丙烯酸为原料成了阻燃型乙烯基酯树脂，其阻燃性能良好。

Biocat-alytic production processes have been set up for the manufacture of special esters like cetyl ricinoleate, so-called emollient esters, used as skin caring oils in cremes and lotions.

化妆品行业上已经建立了生物催化过程来生产如十六烷基蓖麻醇酸酯等化妆品工业中应用酯。