hymecromone

Determination of the Content and Dissolution of Hymecromone in Compound Dantong Capsules by HPLC;

复方胆通胶囊中羟甲香豆素的含量及溶出度的测定

A self-ordered ring(SOR) formed by a sessile droplet on glass slide support has developed as a fluorescent microscopic determination of hymecromone of attomole amount.

实验了在辅助成环剂PVA 124存在下,羟甲香豆素的碱性小液滴在经二氯二甲基硅烷处理的疏水性载玻片上,由于接触线的自固定及接触线附近溶剂的挥发,液滴内部产生向外的毛细流将飞摩尔量羟甲香豆素带到接触线上,富集形成环直径小于1 1mm,环带宽小于26 4μm的SOR。

The electrochemical behavior of hymecromone at MWNTs-CR/GCE was investigated by linear sweep voltammetry(LSV),successive cyclic voltammetry and chronocoulometry.

用线性扫描法、连续循环伏安法和计时库仑法研究了羟甲香豆素(HMC)在该电极上的电化学氧化过程,与裸玻碳电极相比,HMC的氧化峰电流在MWNTs-CR膜上得到了增强,并在痕量阳离子表面活性剂十六烷基三甲基溴化铵存在下得到最大增敏。

Dissolution determination for hymecromone preparation

羟甲香豆素制剂溶出度测定方法的研究

Synthesis of 7-hydroxy-4-methyl coumarin catalyzed by sulfoacid resin;

磺酸树脂催化合成7-羟基-4-甲基香豆素

Synthesis of 7-hydroxy-4-methyl coumarin on stannic chloride anhydrous catalyst;

四氯化锡催化合成7-羟基-4-甲基香豆素

7-hydroxy-4-methyl coumarin as chemical or medical intermediates is very important in industry.

7-羟基-4-甲基香豆素是一种重要的医药化工中间体。

4-methyl-7-hydroxycoumarin,acetic anhydride were used as main materials to synthesis 4-methyl-7-acetoxycoumarin by two methods,One was direct esterification of 4-methyl-7-hydroxycoumarin with acetic anhydride,the other was reacting of acetic anhydride with 4-methyl-7-hydroxy coumarin′ sodium salt, the construction of title compound was confirmed by m.

以乙酸酐、4-甲基-7-羟基香豆素为原料,采用4-甲基-7-羟基香豆素与乙酸酐直接酯化和乙酸酐与4-甲基-7-羟基香豆素的钠盐反应两种方法得到4-甲基-7-乙酰氧基香豆素,并通过熔点、红外、紫外、元素分析对所得化合物的结构进行表征。

Dissolution determination for hymecromone preparation

羟甲香豆素制剂溶出度测定方法的研究

Determination of the Output of Hydroxyl Free Radical by Fluorescence Quenching Method with Hymecromone-Mn~(2+)-H_2O_2 System and Hydroxyl Free Radical-scavenging Activity of Aqueous Extracts of Common Foodstuffs

羟甲香豆素荧光猝灭法测定羟自由基产生量及常见食品水提物羟自由基清除率测定的研究

The Synthesis of 7-Hydroxy-4-Methyl Coumarin by Using Microwave Catalysis;

微波催化合成7-羟基-4-甲基香豆素

Synthesis of 7-Hydroxy-4-methylcoumarin Using Phenyl Sulfonic Acid as Catalyst

苯磺酸催化合成7-羟基-4-甲基香豆素

Synthesis of 7-hydroxy-4-methyl Coumarin Catalyzed by Amberlyst 15 without Solvent

Amberlyst15催化7-羟基-4-甲基香豆素的无溶剂合成

Synthesis of 8(or 6)-Chloro-7-hydroxy-4-methylcoumarins and Their Derivatives

8(或6)-氯-7-羟基-4-甲基香豆素及其衍生物的合成

Synthesis of 6, 7-dihydroxycoumarin;

6，7-二羟基香豆素的合成与研究

Direct Sulfanylation of 4-Hydroxycoumarins with Thiols in Water for Synthesis of 4-sulfanylcoumarins

水相中4-羟基香豆素直接硫醚化合成4-硫醚基香豆素衍生物

Synthesis of 4-ethoxy-7-hydroxycoumarin and its derivatives

4-乙氧基-7-羟基香豆素及其衍生物的合成

Pharmacokinetics Studies on Coumarins Choleretic Drug Armillarisin A;

香豆素类利胆药物亮菌甲素的药代动力学研究

Improvement of the Catalyst in Reaction on the Synthesis of 7-Diethylamino-4-methylcoumarin

7-二乙氨基-4-甲基香豆素合成中催化剂的改良

Study on Microwave-Induced Synthesis、Spectra and Electrochemical of 4-Hydroxycoumarin and Its Derivatives;

4-羟基香豆素及其衍生物的微波合成、光谱及电化学性质研究

Synthesis of 3,3-Arylidene Bis(4-hydroxycoumarin) Catalyzed by Sulfamic Acid in Aqueous Media under Microwave Irradiation

微波辐射下氨磺酸催化水相合成3,3-亚芳基双(4-羟基香豆素)

Microwave-induced Synthesis and Spectral Properties of New 4-Hydroxycoumarin Derivatives

新型4-羟基香豆素衍生物的微波合成及其光谱性质

Improved Procedure for Synthesis of 3-(3,4-Dimethoxyphenyl)-6-methylcoumarin

3-(3,4-二甲氧基苯基)-6-甲基香豆素合成方法的改进

Synthesis of 3-bromine-4,7-dimethyl-6-sulfonylurea coumarin derivatives and study of their hypoglycemic activities

3-溴-4,7-二甲基-6-磺酰脲香豆素类化合物的合成及降糖活性的研究

Determination of 5,7-Dimethoxycoumarin in Fructus Citri Sarcodactylis from Guangdong at Different Collecting Times

不同采收期广佛手中5,7-二甲氧基香豆素的含量测定

They added a small amount of the fluorescent dye coumarin to the emitter material tris (8-hydroxy-quinoline) aluminum.

他们在发光材料三（8?羟基口喹啉）化铝里，加入了少量的萤光染料香豆素。