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

首次以杂多为催化采用酯化法丙二醇单乙醚乙酯。

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

还介绍与多肽片段连接有关肽硫酯和肽醛方法。

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

从茴香油生产茴香醛废渣、废液中提取副产品茴香，茴香甲酯。

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

以3,6-二氯哒嗪为原料,6类芳氧基哒嗪类衍生物,研究它们方法,并测定所得产物除草活性。

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

介绍BH系列化缓方法及性能测试。

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

以苯甲酰氯为原料,经酰化,还原,环等反应左旋西替利嗪盐盐,反应总收率为8.05%。

Twelve different thioxanthone carboxylic amides derivatives are prepared.

十二种噻吨酮酰胺类光引发。

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

以氮-苄基保护胺基酮为原料，经氢化，苯甲酰化，还原三步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过程中一种关键酶。

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

目探讨L-丙氨酰-L-谷氨酰胺双肽化学方法。

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

介绍以甲醇为溶,利用微波能来异硫氰烯丙酯新方法。

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

本文主要研究胂叶立德中碱选择。

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主题篇。

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

色满衍生物关键是构建含有手性中心色满环。

Hydrogen combines chemically with oxygen to form water.

氢和氧化为水。

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

以正庚醛、硫代硫钠和溴代正丁烷为原料,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.

本文介绍以亚硝乙酯代替亚硝丁酯,用氯苯代替无水乙醚铜铁试新工艺。

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

以磷钨和磷钨铝为催化,用乳和正丁乳正丁酯。

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

以工业废氢溴(48%)为原料,在浓硫存在下,与正辛醇进行反应1-溴辛烷。

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

无硫、磷六元含氮杂环化物添加。