羟基的

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

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

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

进一步比较研究不同菌株的PHB解聚酶和3基丁酸脱氢酶的活性。

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

碱热解蓖麻油酸合成10-基癸酸的开发研究进。

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

类物质是由甘油二和结合未化的基形成的。

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

概4-基香豆素的合成方法，重点介绍苯酚法，乙酰水杨酸法，水杨酸甲法，邻基苯乙酮法。

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

［结论］溴量法测定对基苯磺酸钠的含量具有较高的精确度和准确度，且方法简便、快捷、易于推广。

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 四碳和更大的能环化，醛基或酮基与的另一碳原子上的基反应。

The ring-opening polymerization mechanism of lactide in the presence of hydroxyl compounds was studied by using ferric ethoxide and ferric n-butoxide as catalysts respectively.

这些结果表明在含基化合物的丙交/醇铁聚合体系中,基化合物作为共引发剂参与丙交的开环聚合。

Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.

以甲基丙烯酰氯、甲基丙烯酸酐和甲基丙烯酸作酰化剂，研究胆酸甲分子中基的反应活性。

The aurone compounds are generally on one plane ,and they have a bigger conjugate system .The inducement of hydroxyl substituents has little influence on their own geometries .

橙酮类化合物分子共面性较强,为较大的共轭体系,取代基的接入,对橙酮类化合物共面性影响不大。