醚

Ionic liquids of 1-carboxymethyl-3-ethylimidazolium chloride, 1-methoxyethyl- 3-ethylimidazolium chloride ([C2OC1-EIM]Cl) and 1-[2-(2-chloroethoxy)ethyl]-3-ethylimidazolium chloride ([Cl-C2OC2-EIM]Cl) were synthesized, and their chemical structures were confirmed by FT-IR and 1H NMR.

合成了三种含有羧基或醚基的离子液体， 1-羧甲基-3-乙基咪唑氯化物、1-甲氧乙基-3-乙基咪唑氯化物([C2OC1-EIM]Cl)和1-[2-(2-氯乙氧基)乙基]-3-乙基咪唑氯化物([Cl-C2OC2-EIM]Cl)，用FT-IR和1H NMR对它们的化学结构进行了表征。

It is slightly soluble in ethyl ether, petroleum ether, benzene and chloroform.

在空气中易潮解，微溶于乙醚、石油醚、苯、氯仿，其水溶液碱性。

The effects of different entrainers(methanol,acetone,ethyl acetate,petroleum ether and ethanol of different concentrations) on the diosgenin extraction rate were studied.

探讨了乙醇、甲醇、丙酮、乙酸乙酯、石油醚作为夹带剂以及在无夹带剂的条件下，对薯蓣皂素收率的影响。

Ethyl tert-butyl ether can be produced by ethonol and isobutene catalyzed by acidic ion exchange resins.

乙基叔丁基醚一般由乙醇和异丁烯合成，以阳离子交换树脂为催化剂。

It is easily soluble in water, acetone and alcohol, slightly soluble in ether, ethyl acetate, chloroform, and pyridine, unsoluble in benzene.

熔点151℃～154℃。易溶于水、丙酮与醇，微溶于醚、乙酸乙酯、氯仿和吡啶，不溶于苯。

Methods The cultivated Cs fungus HK-1 and natural Cs were extracted with petroleum ether, ethyl acetate, ethanol, and water.

方法人工虫草菌HK-1与天然虫草分别用石油醚、醋酸乙酯、乙醇和水提取。

Results The optimum combination was 10μmol/L β-asarone +3μmol/L eugenol, which can decrease the concentration of intracellular Ca(superscript 2+), inhibit the production of NO and increase the survival rate of PC12 cells.

结果β-细辛醚10μmol/L+丁香酚3μmol/L组合能有效减少细胞内Ca(上标 2+)浓度，抑制NO的产生，提高细胞存活率。

As to kaolinite, it is hydrogen bond that breaks, which provides the broken surface with permanent negative charge because of the isomorphic exchange of lattice ion.

2通过对工业淀粉进行氧化和醚化改性，制得了羧甲基淀粉、氧肟酸淀粉、阳离子淀粉和双醛淀粉。

Polyether is often used as pharmaceutical excipient and emulsifier because of its low toxicity.

聚醚毒性很低，常用作药物赋形剂和乳化剂。

Objective To study the solubilization effect of a novel excipient sulfobutyl ether-β-cyclodextrin on ibuprofen.

摘要目的研究新型辅料磺丁基醚-β-环糊精对布洛芬的增溶作用，用以提高布洛芬的溶解度。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。