查询词典 carboxylic acid

Fourier commutation is infra-red and spectral analysis proved sulphur as a result acid radical group is mixed the success of group of carboxylic acid radical introduces, right those who accept branch film is thermodynamic undertook study with chemical character.

傅里叶变换红外光谱分析结果证实了磺酸基团和羧酸基团的成功引入，并对接枝膜的热力学和化学特性进行了探究。

" Oxalic acid: Colourless, crystalline, toxic carboxylic acid found in many plants, especially rhubarb, wood sorrel, and spinach."

草酸：无色结晶有毒的羧酸类有机化合物。许多植物中有草酸，尤其是大黄、酢浆草和菠菜。

Aromatic and aliphatic aldoxime s could be efficiently converted into the corresponding carboxylic acid esters by treatment aldoxime s with an alcoholic solution of 30% hydrogen peroxide in the presence of catalytic amounts of polystyrene-bound phenylseleninic acid.

在30%双氧水和醇组成体系中，聚合物负载的苯亚硒酸试剂可有效地促进过氧化氢氧化肟转变成羧酸酯；相应伯醇和仲醇的羧酸酯的产率中等到良好，但在含叔醇的体系中没有相应的羧酸酯生成。

Azelaic acid is a natural saturated binary carboxylic acid, which has good inhibitory and killing activities to various aerobic and anaerobic micro-organisms presents on the skin suffered acne.

壬二酸是一种天然的饱和二羧酸，壬二酸对存在于粉刺皮肤上的各种需氧和厌氧微生物均有良好的抑菌、杀菌活性。

Many natural resins exist which contain carboxylic acid such as carboxy celluloses and proteins containing glutamic acid.

许多天然树脂存在，包含如羧基纤维素和蛋白质，含有谷氨酸羧酸。

Thiazolidiane-4-carboxylic acid was prepared and used as the aid catalyst that has strengthened the catalytic effect of chloroplatinic acid, greatly improved the yield of the hydrosilylation of methyldichlorosilane with allychloride, and made the yield get to 64.9%.

通过比较，选用自制的含硫化合物4-羧基-1，3-噻唑烷作助催化剂，大大增强了氯铂酸的催化活性，使甲基二氯硅烷与氯丙烯的加成反应以较高产率得到γ-氯丙基甲基二氯硅烷，产率可达64.9%。

The influence of the use level of base and monochloroacetic acid on the degree of substitution in CMS,the influence of DS and H/Na(ratio of free and salified carboxylic acid in CMS)on swelling and disintegrating of CMS have been discussed.

考察了碱和一氯乙酸用量对CMS取代度的影响及DS和CMS中游离羧基和成盐羧基比对崩解剂吸水溶胀性能的影响。

Biochemical and Biological Properties of 4-(3-phenyl-[1,2,4] thiadiazol-5-yl)-piperazine-1-carboxylic acid phenylamide, a Mechanism-Based Inhibitor of Fatty Acid Amide Hydrolase Technical Communication

4--哌嗪-1-羧基酸苯胺的生化和生物学属性，脂肪酸氨基水解酶的一个基于机制的抑制剂

Starting from chiral proline, pipecolinic acid, piperazine-2-carboxylic acid and 1,2-diphenyl amino alcohol, a series of structurally simple and easily prepared amides were developed as highly effective Lewis basic organocatalysts for the asymmetric reduction of imines with trichlorosilane as the reducing agent, which promoted the reduction of N-aryl imines with high yields and excellent enantioselectivities with an unprecedented substrate spectrum.

本文分别由手性脯氨酸、哌啶酸、哌嗪酸以及氨基醇出发，设计和合成了一系列结构新颖、合成简便、性能优良的酰胺类有机小分子路易斯碱催化剂，以廉价的三氯氢硅为氢源，用这些催化剂催化亚胺不对称还原，得到了非常优良的收率、对映选择性和前所未有的底物普适性。

"Finally, hydrochloric acid (327 kg) was added to the product (8) and the mixture was refluxed for approximately 2 hours to allow the amide to hydrolyze to the carboxylic acid."

最后，在产品(8)中加入327千克盐酸，混合物回流加热约2小时，使酰胺水解成羧酸。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。