The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团引入改善8-羟基喹啉生色能力，并且在乙腈溶液中随着取代基由苯基变为萘基和蒽基时，化合物吸收光谱发生红移。

Intracellular PHB depolymerase and 3 hydroxybutyrate dehydrogenase catalyze the initial reactions of intracellular PHB catabolism.

一步比较研究不同菌株PHB解聚酶和3羟基丁酸脱氢酶。

Often used in combination with Diacetyl and certain Diketones (Hexane-,Pentanedione).

名称：甲基乙酰甲醇，乙偶姻,3-羟基-2-丁酮,醋嗡.

Glycolipids (glycosyldiacylglycerols) are diacylglycerols with a sugar attached to the unesterified hydroxyl group.

糖酯类物质是由甘油二酯和糖结合未酯化羟基形成。

HPLC method was established for determination of 5,7-dihydroxychromone and eriodictyol of peanut hulls.

建立测定花生壳中5,7-二羟基色原酮和圣草酚HPLC方法。

The research on producing 10-hydroxy decanoic acid by alkaline scission of ricinolein acid is reviewed.

综碱热解蓖麻油酸合成10-羟基癸酸开发研究展。

OH -Tautomer more stable and predicted to predominate in gas phase.

羟基互变异构体更加稳定和预测天然气占主导阶段。

The application of monohydroxy or carboxy group compound to fluoro rubber were analyzed.

对一羟基或羧基化合物在氟橡胶胶料中应用研究。

The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.

概4-羟基香豆素合成方法，重点介绍苯酚法，乙酰水杨酸法，水杨酸甲酯法，邻羟基苯乙酮法。

Method Conjunctival sac blepharoplasty by skin transplanting and blepharorrhaphy were performed in the same period of HA orbital implantation.

方法羟基磷灰石义眼台植入同期中厚皮片游离移植结膜囊成形术联合睑缘粘连缝合术。

Objective ]: To study the permeability of cinnamic aldehyde and hydroxycitronellal through skins of mice in vitro.

目］研究桂醛、羟基香茅醛对小鼠离体皮肤透皮吸收率。

The preparation of hydroxyacetone was studied by esterification of chloroacetone with sodium formate and alcholysis of acetonyl formate with methanol.

以一氯丙酮、甲酸钠和甲醇为原料经酯化与醇解两步反应合成羟基丙酮,研究反应条件对相转移催化酯化以及醇解反应蒸馏过程影响。

The method is simple and rapid, it can be used for the determination of Hydroxy-benzenesulfonic acid monosodium salt sodium phenolsulfonate.

［结论］溴量法测定对羟基苯磺酸钠含量具有较高精确度和准确度，且方法简便、快捷、易于推广。

METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.

方法将厚朴酚两羟基用缩酮保护,再用正己烷重结晶分离纯化。

This paper initially discussed synthesis and modification of tetrafunctional epoxy resin(1,1,2,2- tetrakis(hydroxy phenye)ethane),as well as application in copper clad laminate.

对四官能环氧树脂[1,1,2,2-四(对羟基苯基)乙烷四缩水甘油醚]合成与改及在覆铜板中应用作初步探讨,并对其屏蔽紫外线与产生荧光机理作用作简单阐。

In this paper, synthesis of salidroside was reported starting from 4 hydroxyl phenylacetic acid through benzylation, esterification, reduction and glycosidation.

报道以对羟基苯乙酸为原料,经过苄基化、酯化、还原、甙化等步骤合成红景天甙一种方法.

They are formed byatmospheric photochemistry reaction, and could product OH radical, alkyl radical, ozone,carboxylic acid peroxyacetyl nitrates by atmospheric photochemistry reaction.

羰基化合物既是大气光化学反应产物，又能通过光化学反应生成羧酸、羟基自由基、臭氧和过氧乙酰硝酸酯。

Glucose cyclizes to form asix- membered pyranose ring whilst five –carbon surgars and six-carbon ketose sugars (ketohexoses) such as fructnose rings.

环状结构 四碳糖和更大糖能环化，醛基或酮基与糖另一碳原子上羟基反应。

P-hydroxyacetophenone combined with methyl chloroacetate can get a new acetonate.This new acetonate combined with another compound-ethanolamine and get a new schiff base.

由对羟基苯乙酮与氯乙酸甲酯反应,得到一种酮,这种酮再与乙醇胺反应得到一种新希夫碱。

OBJECTIVE To prepare long-circulating nanostructrued lipid carries (NLC) containing hydroxycamptothecin with monostearin and investigate the in vitro and in vivo characterization of them.

目以单硬脂酸甘油酯为载体材料制备羟基喜树碱长循环纳米脂质载体,并考察其体内外质。