Propylene glycol monoether acetate was synthesized using heteropoly acid as catalyst for the firsttime.

首次以杂多酸为催化剂采用酯化法合成丙二醇单乙醚乙酸酯。

The synthetic methods of peptide thioester and peptide aldehyde are also discussed.

介绍与多肽片段连接有关的肽硫酯和肽醛的合成方法。

Anisic acid is separated from the residue of producing anisic aldehyde and synthetized methyl anisate.

香油生产香醛的废渣、废液中提取副产品香酸，合成香酸甲酯。

Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine.

以3,6-二氯哒嗪为料,合成6类芳氧基哒嗪类衍生物,研究它们的合成方法,并测定所得产物的除草活性。

The synthetic method and performance testing of BH series acidulate corrosion inhibitor were introduced.

介绍BH系列酸化缓蚀剂的合成方法及性能测试。

Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.

以苯甲酰氯为料,经酰化,,合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%。

Twelve different thioxanthone carboxylic amides derivatives are prepared.

合成十二种噻吨酮酰胺类光引发剂。

The target compound was synthesized from N-benzyl protected aminoacetophenone through hydrogenation,benzoylation and reduction.

以氮-苄基保护胺基酮为料，经氢化，苯甲酰化，三步合成双苯甲酰沙丁胺醇酯。

Peptide deformylase (PDF) is an essential enzyme involving in bacterial protein biosynthesis.

肽脱甲酰基酶是细菌蛋白质合成过程中一种关键酶。

Objective To explore the method of chemical synth esis of L-alanyl-L-glutamine dipeptide.

目的探讨L-丙氨酰-L-谷氨酰胺双肽的化学合成方法。

The article presents Synthesizing Allyl isorhodanate by using microwave energy withmethylic alcohol as solvent.

介绍以甲醇为溶剂,利用微波能来合成异硫氰酸烯丙酯的新方法。

How to choose the base used in the synthesis of arsine ylide is studied.

本文主要研究胂叶立德合成中碱的选择。

The suite is a composite of themes for various parts of the opera.

这组曲是这部歌剧不同部分的主题的合成篇。

The key step of the synthesis of chroman derivatives is to construct chiral chroman ring.

合成色满衍生物的关键是构建含有手性中心的色满。

Hydrogen combines chemically with oxygen to form water.

氢和氧化合成为水。

The heptanal butyl mercaptal was synthesized with heptanal, sodium thiosuifate and 1bromobutane as raw materials.

以正庚醛、硫代硫酸钠和溴代正丁烷为料,合成正庚醛正丁硫醇缩醛。

In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.

本文介绍以亚硝酸乙酯代替亚硝酸丁酯,用氯苯代替无水乙醚合成铜铁试剂的新工艺。

Synthesis of n-butyl lactate is catalyzed by phosphotungstic acid and aluminium phosphotungstate.

以磷钨酸和磷钨酸铝为催化剂,用乳酸和正丁酸合成乳酸正丁酯。

Bromooctane was synthesized from industrial hydrobromic acid(48%) and n-octanol using concentrated sulfuric acid as catalyst.

以工业废氢溴酸(48%)为料,在浓硫酸存在下,与正辛醇进行反应合成1-溴辛烷。

Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

合成无硫、磷的六元含氮杂化合物添加剂。