查询词典 intermediates

As fine chemical raw material, isoprene can be used to produce various perfumes, medicines, pesticide intermediates such as high value-added linalool, pyrethroid and ionone.

化学级异戊二烯是精细化工的原料，可以生产高附加值的芳樟醇、拟除虫菊酯、紫罗兰酮等多种香料、医药、农药中间体。

Rearrangement of HCCOH can lead to several other isomer intermediates.

涉及这些中间体的去氢反应也给予了研究。

Oxo ketene dithioacetals are a kind of versatile intermediates in organicsynthesis. It can be widely used in forming aromatic and heterocyclic compounds.

α-羰基二硫缩烯酮类化合物是一类重要的有机合成中间体，广泛应用于芳环和杂环化合物的合成中。

Keywords ketene;isopropenyl acetate;esterification;strong acidic cation-exchange resin;fine chemical intermediates

乙烯酮；乙酸异丙烯酯；酯化反应；强酸性离子交换树脂；精细化工中间体

The comparisons of biochemistry between OP and OR rats The differences between OP and OR rats included not only body weight, but lipids metabolism and insulin sensitivity as well, characterized with insulin resistance, increasing in serum free fatty acids and ketone body, and hepatic TC and TG in OP rats. However, no significant differences were observed in serum TG, TC, LDL, HDL and fasting glucose between OP and OR rats.⑶Comparisons of metabolites in serum, urine and liver tissue between OP and OR rats①There were significant differences in amino acids concentration between OP and OR rats,especially in liver tissue, such as high concentrations in ketogenic and glucogenic amino acids in OP rats, suggesting differences in amino acids metabolism;② The different metabolites between OP and OR rats included increasing of various saturated fatty acids and decreasing of polyunsaturated fatty acids in OP rats;③The urinary metabolites analysis indicated that different structure or metabolism of gut microflora might exist between the two phenotypes, which probably influenced the regulation of body weight gain;④The end-products of catecholamines in urine and intermediates of krebs cycle in serum in OP rats were all up-regulated, suggesting that the activity of sympatheic nervous system and energy metabolism was higher in OP rats than OR rats.

胰岛素耐受实验和胰岛素敏感指数表明OP动物的胰岛素敏感性较OR动物下降，而OP大鼠血清中游离脂肪酸、酮体、肝脏总胆固醇和甘油三酯水平显著升高；但是，OP与OR大鼠血清中总胆固醇、甘油三酯、低密度脂蛋白、高密度脂蛋白和空腹血糖等的水平并无显著性差异；⑶肥胖易感与肥胖抵抗大鼠血清、尿液和肝脏组织提取物中代谢物的比较研究表明：①OP与OR大鼠的血清、尿液和肝组织提取物中多种氨基酸的含量存在显著差异，并以肝组织中的差异氨基酸数量为最多，包括各种生酮和生糖氨基酸水平在OP组的升高，说明氨基酸代谢的差异是两种体重表型大鼠之间存在的重要差异特征之一；②OP与OR动物肝脏和血清差异代谢物中包含多种饱和长链脂肪酸的升高如十四烷酸、十六烷酸、硬脂酸等和多不饱和脂肪酸的下降如亚油酸和花生四烯酸，说明两种体重表型动物的肝脏脂肪酸代谢存在明显差异；③长期高脂饮食喂养后，动物的尿液代谢物分析表明OP与OR动物体内的肠道菌群结构存在差异，这些菌群上的差别可能在动物体重增长的调节上产生影响；④与OR动物相比，OP动物尿液代谢物中儿茶酚胺类递质的代谢终产物如高香草酸、扁桃酸和4-羟基苯乙酸明显升高。

As one of the most urgently needed medical intermediates, D-p-hydroxyphenylglycine is used mainly to produce β-lactam antibiotics.

D-对羟基苯甘氨酸主要用于合成β-内酰胺类半合成抗生素，是国内最紧缺的医药中间体之一。

In this paper, we designed and prepared the intermediates of lanthanide complexes according to some correlative literature.

本论文通过参考相关文献自行设计合成路线，成功合成了稀土配合物荧光探针的中间体。

Hydroxy-2,3-dihydro-4-quinolone is synthesized by the basic material of 4-nitrochloro-benzene. It has investigated the routes, conditions and purifies methods in this paper, which provides bases to lucubration and industrialization. This study belongs to the field of medical intermediates.

本文以4-硝基氯苯和丙烯酸为基础原料合成6-羟基-2，3-二氢-4-喹啉酮，并对6-羟基-2，3-二氢-4-喹啉酮的合成条件和纯化方法进行了实验研究，为后续的深入研究和工业化生产提供依据。

The membranous material was composed of three layers membranes, and some were associated with the assembly intermediates.

膜样物质由三层膜组成，它的一端和病毒装配中间体相连。

Mesitylene is an important material in organic synthesis mainly used toproduce 1,3,5-trimethylaniline, weedicide, antioxygen agent, medicine and manyvarious fine chemical intermediates.

均三甲苯是一种重要的有机合成原料，主要用于生成均三甲苯胺、除草剂、抗氧剂、医药及多种精细化工中间体。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。