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Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.

间硝基苯甲醛,酯,氨化试剂为原料。

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In this paper, (S)- ethyl mandelate was obtained through chiral resolution of racemic ethyl mandelate by lipase.

扁桃酸酯是合成扁桃酸系列药物的重要中间体。

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Its catalytic performance in Heck reaction of iodobenzene with ethyl acrylate was studied.

研究了该催化剂对碘代苯酯反应的催化性能及循环使用性能。

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Tertiary amine, Chloroacetic acid and ethyl Chloroacetate could synergize MI and increase the ...

MI给电性单体的组合效应不太明显。

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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酯、苯醇、辛酸和辛酸酯。

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Because of all these disvantages acetylchloride is used to react with absolute ethyl alcohol and synthesize ethyl acetate.

鉴于传统方法存在上缺点,采用氯代替酸作为原料,不使用任何催化剂,不加热,常温反应来合成酯。

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And it is proved that the trifluoro ethyl methacrylate takes part in the copolymerization reaction.

讨论了氟单体用量对转化率的影响。

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Activated carbon as the sorbent and catalyst support was capsulated with ethyl cellulose by phase separation methods.

摘要对兼具吸附和催化剂载体功能的多孔结构活性基纤维素为材料用相分离进行包覆。

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Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.

BTEAC(苄基三基氯化铵)为相转移催化剂合成了异烟酸酯。

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The effect that isopropyl xanthogen ethyl formate is synthesized with isopropyl xanthate under differ condition has been studied.

考察了不同条件对异基黄药合成异基黄原酸甲酸酯的影响。

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The turbidity was induced mainly by inorganic salt in seriflux and the ethyl fatty acid in brut liquor.

低度白酒浑浊及货架期沉淀的原因主要是由加浆水中的无机盐和原酒中的高级脂肪酸酯引起的。

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The phenylacetyl ethanolamine,a low toxic precurson of benzylpenicillin,was synthesized by using ethyl phenylacetate and colamine as raw materials.

酯和醇胺为原料合成了苄青霉素低毒前体苯醇胺。

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A series of toxic products were produced after photocatalysis on ethanol, such as acetaldehyde, ethyl formate, ethyl acetate, diethoxymethane, 1,1-diethoxyethane.

醇的反应产物包括醛,酯,酸甲酯,缩醛等一系列有害物质。

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The synthesis of ethyl vanillin from urotropin is a major method with high yields,simple process, and available raw materials.

乌洛托品法是合成已基香兰素的一种重要方法,它操作简单,原料易得,产率较高。

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Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.

采用无水醇、醚、酮及水作溶剂,对四川汉源花椒作了精油提取研究。

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Isobornyl ethyl ether was prepared by ethoxylation of camphene with absolute ethanol in the presence of DCP heat-resistant ion exchange resin.

工业莰在耐高温离子交换树脂DCP催化作用下无水醇反应生成了异龙脑基醚。

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Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.

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OBJECTIVE: To study the effects of different dispersing media, such as atolin and ethyl benzoate, on sustained-release properties of chitosan microspheres.

观察液体石蜡和苯甲酸酯作为分散介质对壳聚糖载药微球缓释性能的影响。

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A synthetic method of benazolin ethyl was present with ochloroaniline, ammounium rhodanide, sulfuryl chloride, sodium nitrite and ethyl chloroacetate as the raw materials.

报道了邻氯苯胺、硫氰酸铵、硫氯、亚硝酸钠和氯酯为主要原料合成草除灵酯的方法。

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Isobornyl ethyl ether was prepared by the catalytic ethoxylation of camphene with ethyl alcohol in the presence of cation exchange resin fixed bed.

在阳离子交换树脂固定床催化下醇反应生成异菠基醚。

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连线杂志

We use nitrogen to clean the lacquer, and we use methyl ethyl ketone to keep the stylus clean.

我们来清洁漆,我们甲乙酮来保持唱针的清洁。

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科学60秒-科学美国人 2019年12月合集

Turns out the charcoal stripped out a third of the branched alcohols and nearly half of the ethyl esters.

结果发现,滤掉了三分之的支链醇和近半的乙酯。

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Crash Course 综合篇

Since this attachment has two carbons, we call it an ethyl group.

由于这个连接有两个碳, 我们称之为乙基。

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学生科学报

The ADH7 gene produces a protein that helps to break down ethyl alcohol.

ADH7 基因产生种有助于分解乙醇的蛋白质。

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Crash Course 综合篇

So when we put it all together, this compound is called 4 ethyl octane.

所以当我们把它们放在起时, 这种化合物叫做 4 乙基辛烷。

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Crash Course 综合篇

So, if we number the chain the right way, the ethyl group will end up at position 4.

因此,如果我们以正确的方式对链进行编号, 乙基将位于第 4 位。

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科学60秒-科学美国人 2019年4月合集

Turns out the charcoal stripped out a third of the branched alcohols and nearly half of the ethyl esters.

事实证明,除了三分之的支链醇和将近半的乙酯。

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Crash Course 综合篇

It has two branches, an ethyl group and a methyl group.

它有两个分支, 个乙基和个甲基。

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科学60秒-科学美国人 2019年12月合集

He then tracked the quantities of four of them - two branched alcohols and two ethyl esters - before and after the Lincoln County Process.

之后,他追踪了其中四种物质——两种支链醇和两种乙酯——在林肯郡处理法使前后的数量。

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Crash Course 综合篇

The structure we just used had a methyl group on it and an ethyl group on its fifth, it would be 5-ethyl-2-methyloctane.

我们刚刚使的结构上有个甲基, 第五个有个乙基,它是 5-乙基-2-甲基辛烷。

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Scishow 精选系列

Whenever you hear people talking about " alcohol" , like 99.99 percent of the time, what they're talking about is ethanol, also known as ethyl alcohol.

当你听到别人说“酒精”的时候,大概在百分之九十九的时候,他们说的般都是乙醇。

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SciShow - Chemistry

Whenever you hear people talking about " alcohol" , like 99.99 percent of the time, what they’re talking about is ethanol, also known as ethyl alcohol.

每当你听到人们谈论“酒精” 时,99. 99% 的情况下,他们谈论的是乙醇, 也称为乙醇。

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当月 CNN 10 学生英语 2020年8月合集

The U.S. Environmental Protection Agency lists products containing ethyl alcohol and hydrogen peroxide as likely being effective cleaners but the race is on to see what else can do the trick, essential oils, candles, ultraviolet light.

美国环境保护署列出了含有乙醇和双氧水的产品,这些可能是有效的清洁剂,但目前还在寻找其他有效产品,精油、蜡烛、紫外线等。

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