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Glycolipids (glycosyldiacylglycerols) are diacylglycerols with a sugar attached to the unesterified hydroxyl group.

酯类物质是由甘油二酯和未酯化的羟基形成的。

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METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.

方法将厚朴酚两羟基用缩酮保护,再用正己烷重晶分离纯化。

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In this paper, synthesis of salidroside was reported starting from 4 hydroxyl phenylacetic acid through benzylation, esterification, reduction and glycosidation.

报道了以对羟基苯乙酸为原料,经过苄基化、酯化、还原、化等步骤成红景天的一种方法.

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The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.

通过对其酰化原理分析,选用乙酰氯作酰化剂、二氯甲烷作酰化溶剂,测定含环氧基聚酯的羟值。

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The ring-opening polymerization mechanism of lactide in the presence of hydroxyl compounds was studied by using ferric ethoxide and ferric n-butoxide as catalysts respectively.

这些在含羟基化物的丙交酯/醇铁聚体系中,羟基化物作为共引发剂参与了丙交酯的开环聚

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Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.

以甲基丙烯酰氯、甲基丙烯酸酐和甲基丙烯酸作酰化剂,研究了胆酸甲酯分子中羟基的反应活性。

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Nuclear magnetic resonance techniques are used to determine the national aleutric acid preferential conformation. The results show that the dithionic hydroxyl radicals are in reciprocal cross bearing.

采用核磁共振谱法测定了国产紫胶桐酸的优势构象,,其分子中连二羟基处于反交叉位。

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The aurone compounds are generally on one plane ,and they have a bigger conjugate system .The inducement of hydroxyl substituents has little influence on their own geometries .

橙酮类化物分子共面性较强,为较大的共轭体系,取代羟基的接入,对橙酮类化物共面性影响不大。

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Just two or three carbon atoms, a hydroxyl group, and some hydrogens.

只有两个或三个碳原子、一个羟以及一些氢原子。

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日常生活医学科普

The incorporation of Ascorbic acid with the enzyme, adds hydroxyl group on proline residue in collagen.

抗坏血酸与酶的结合,胶原中的脯氨酸残上增加了羟

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And what's left are molecules with four carbons, each of which is saturated, and attached to a hydroxyl group.

剩下的是含四个碳的子,每个都是饱和的,依附上。

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科学60秒-科学美国人 2020年8月合集

Normally, dehydration would make tardigrade DNA susceptible to damage from chemicals called hydroxyl radicals, which form when water molecules split.

通常情况下,脱步DNA容易受到一种名为羟自由的化学物质的伤害,这种物质裂时形成。

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Its molecules come in long chains, called polymers, and on each end there's a hydrogen-oxygen pair, called a hydroxyl group.

他的子拥有很长的链叫做高子聚合物,每一个子的末端都有一个氢氧对,叫做羟组。

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Sometimes a hydroxyl group from one molecule is happy to join up with a hydrogen from another, forming water.

有时,一个子中的羟很乐意与另一个子中的氢结合, 形成

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SciShow - Chemistry

And what’s left are molecules with four carbons, each of which is saturated, and attached to a hydroxyl group.

剩下的是有四个碳的子,每个碳都是饱和的,并连接到一个羟上。

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中级英语短文

Scientists would need to treat rock and soil with heat to extract water molecules and hydroxyl from them and turn it into liquid water, he said.

他说,科学家需要用热处理岩石和土壤,从中提取子和羟,并将其转化为液态

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Their experiments show that methanol, commonly known as wood alcohol, and hydroxyl react rapidly at –210 degrees Celsius to form methoxy, which has also been spotted in space.

他们的实验显示,甲醇(俗名木精)和羟形成甲氧的反应速度零下 210 摄氏度时很快,而研究人员也宇宙中发现了这一过程。

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It reacts with HOPDMS in such a way that it breaks off a hydroxyl group from one end of each chain, so that two chains can join together!

它与 HOPDMS 产生反应,通过打断每一个链接末尾的羟组,得两个链接可以结合一起!

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Newsweek

Carboxylic acids are a type of organic compound characterized by a carbon (C) atom doubly bonded to an oxygen (O) atom and singly bonded to a hydroxyl group (-OH) .

羧酸是一种有机化合物,其特征是一个碳(C)原子与一个氧(O)原子双键结合,并与一个羟(-OH)单键结合。

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Osmosis-内

Beta hydroxybutyric acid on the other hand, even though it's still one of the ketone bodies, isn't technically a ketoacid since its ketone group has been reduced to a hydroxyl group.

而β-羟丁酸虽说也是酮体,但却不是酮酸,因为它的酮团被还原成了羟

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化学 Crash Course

If you were paying attention, you learned that alcohols are organic compounds with hydroxyl groups, if you dehydrogenate them, the hydroxyl converts to a carbonyl and they become dehydrogenated alcohols or aldehydes.

如果你留心的话,你就知道醇是带有羟的有机化合物, 如果你将它们脱氢, 羟转化为羰, 它们就变成脱氢的醇或醛。

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Technically speaking, an alcohol is any compound that contains a hydrogen-oxygen pair, known as a hydroxyl group, that's bound to an atom of carbon that's saturated, meaning all of its electrons are bound to something else.

严格说来,含有氢氧化合物的东西都是酒精,也就是我们所熟知的氢氧,粘着饱和的碳原子上,也就是意味着所有的电子都粘着另外的东西上。

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It replaced one of salicylic acid's hydroxyl group — that's an oxygen and hydrogen bonded to a carbon — with an acetyl group, which is two carbons, one double-bonded to an oxygen and the other bonded to three hydrogens.

它用乙酰取代了杨酸的一个羟——氧和氢与碳结合——乙酰是两个碳,一个与氧双键结合,另一个与三个氢结合。

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If it's a six carbon chain with a carboxylic acid on it and an alcohol on one of the other carbons, our name has to do two things: identify that the hydroxyl group is there and identify where it is.

如果它是一个六碳链, 上面有一个羧酸, 另一个碳上有一个醇,我们的名字必须做两件事:确定羟的存并确定它的位置。

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