The invention relates to a method for preparing adefovir dipivoxil dual oxygen methyl pivalate from adefovir.

本发明涉及从阿德福韦制备阿德福韦酯二氧新戊酸双氧甲基酯的方法。

The excretion of methyl mercury becomes very difficult because of high enterohepatic circulation and reabsorption by proximal convoluted tubule.

由于甲基汞在体内的肠肝循环和肾脏近曲小管对甲基汞的重吸收效率高，使甲基汞的体外排泄十分困难。

Tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation.

经过开环、光气化、缩合等一系列反应制备了苯磺隆。

Approximately 30 compounds including methyl salicylate have been identified in the aroma of green tea.

约有30种化合物已从绿茶的香气中鉴别出来，其中包括水杨酸苄酯。

Trimethylaluminum(TMA) was synthesized by reaction of triethylaluminium (TEA) with methyl bromide on iron-stibonium complex catalyst.

以三乙基铝（茶）和甲基溴为原料，在铁-锑络合物催化剂上反应合成了三甲基铝（TMA）。

The invention discloses a new use of methyl liensinine.

本发明披露了甲基莲心碱的新用途。

Some cases of accidental overdose of methyl salicylate and camphor have been fatal.

意外服药过量的甲基水杨酸和樟脑是致命的。

Another example is methyl orange, which is red in acids and yellow in alkali solutions.

另一个例子是甲基橙，它在酸性溶液中为红色而在碱性溶液中为黄色。

When a methyl group attaches to a specific spot on a gene - a process called DNA methylation.

甲基附加到基因上某个特殊点的过程，称为DNA甲基化。

Biologists have long known about the switches, which are clusters of atoms called methyl groups.

生物学家早已知道这个开关，它是由原子组成的，叫做甲基。

One adds molecules called methyl groups to the DNA of the gene. This suppresses gene expression.

一种是在基因的DNA上添加甲基，从而阻止了基因表达。

The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.

工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。

Various overlay mediums, such as AGAR, starch gel, methyl cellulose and tragacanth are used.

常用的覆盖培养基有：琼脂、淀粉凝胶甲基纤维素和黄蓍胶等。

There are some most people used like prednisone, methyl - prednisone, intravenously or oral.

有些人使用强的松， 甲基强的松龙， 静脉注射或者口服。

The gas was banned by the Montreal Protocol, so now, no new methyl chloroform is fouling the data.

礼仪阻止气体生成，因此，再没有新的甲醇氯仿物能够打乱这项研究的数据了。

Hydroxyethyl methyl cellulose plays more important role on the improvement of water retention.

羟乙基甲基纤维素对保水率的提高起着主要的作用。

In the process glyceride is transformed into fatty acid methyl ester and glycerol by - product.

在这个过程中甘油酯转化为脂肪酸甲酯，并生成副产甘油。

Small chemicals called methyl groups bind to the DNA, helping to determine which genes become active.

被叫做甲基群的小东西附着在DNA上，用以帮助决定哪些基因激活。

Epigenomics studies the distribution over the genome’s DNA of control molecules called methyl groups.

表观基因组学研究的是分布在控制分子的基因组DNA (叫作甲基群).

A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.

甲基是有机化学的基本单位：一个碳原子连接三个氢原子。

This analysis detected 4-methyl steranes-chemicals often made by tiny algae known as dinoflagellates.

分析检测到了4 -甲基甾烷——经常由被称为鞭毛藻微小藻类产生的化学物质。

So, you already have a hint that methyl groups are never in the middle, they always have to be on the outside.

那么，你已经得到了一个提示，那就是甲基永远都不可能在中间，它们总是在外侧。

Thiomersal, however, contains ethyl mercury, not methyl mercury, and ethyl and methyl mercury are quite different.

然而，硫柳汞中所含的是乙基汞，而非甲基汞，乙基汞和甲基汞有很大区别。

But the results varied widely, possibly because of inaccurate estimates of methyl chloroform released by human activities.

但是，结果已经发生了很大变化，可能是因为对人类活动生成的甲醇氯仿物估计不准造成的。

Latex gloves are a better option for handling thinners with methyl ethyl ketone but for only a limited duration per glove pair.

乳胶手套是处理含丁酮稀释液更好的选择，但是每副手套只能在有限的时间内处理（丁酮）。

Thiomersal does not contain methyl mercury, which is a naturally-occurring compound and whose toxic effects on humans have been well studied.

硫柳汞不含有甲基汞，后者是一种自然产生的化合物，其对人类的有毒影响已得到充分的研究。

Expert advice and data presented to the GACVS in June 2002 indicate that the pharmacokinetics of ethyl and methyl mercury are quite different.

专家咨询和2002年6月GACVS的会议资料表明，乙基汞与甲基汞的药物代谢动力学情况是很不一样的。

After being consumed by the mothers, the methyl donors worked their way into the developing embryos' chromosomes and onto the critical agouti gene.

大鼠通过消化，甲基通过自己的方式进入了胚胎的染色体，转变成具有决定性的基因。

Previously, MTBE (methyl tertiary-butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.

以前，MTBE（甲基叔丁基醚）曾作为汽油充氧剂，但是，在2004年，人们发现它污染了地下水，所以就不再使用它了。