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

本文介绍了以亚硝乙酯代替亚硝丁酯,用氯苯代替无水乙醚合成铜铁试剂新工艺。

Objective : A method of HPLC for the determination of complex preparations of guaiphenesin , chlorpheniramine maleate and dextromethorphan hydrobromide has been described Methods : C 18 column , 0.

建立一种采用高效液相色谱检制剂中氢溴美沙芬、愈创木酚甘油醚和马来氯苯那敏含量法。

In the liquor of acetic acid,the catalyzed synthesis of m-chlorobenzoic acid by the reaction of m-chlorobenzal dehyde and potassium bromate was studied.

在醋溶液中,以间氯苯甲醛、溴钾为原料合成间氯苯甲,研究了反应温度、反应时间、原料配比、溶剂用量等条件对合成反应影响,确定了最佳工艺条件。

Four kinds of methods to synthesize o-Dichlorobenzaldehyde were introduced. the advantages of hydrolysis methods to reduce p-toluene sulfonyl chloride were discussed.

主要介绍了四种二氯苯甲醛合成工艺路线,并比较利弊,阐述了对甲苯磺酰氯氯化水解法优越性。

In addition, the subjects who took guanfacine had significantly more somnolence, lightheadedness, and dry mouth than those who took placebo.

另外，服用氯苯乙胍患者比服用安慰剂患者有更明显嗜睡、头昏、口干等症状。

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.

以氯苯和邻苯二甲酐为起始原料，经四步工序合成马吲哚，总收率为23．4％。

Nitrodiphenylamine is synthesiized by direct condensing method,adsopting aniline and 2-nitrochlorobenzene as feeds,PEG as phase transfer catalyst.

以苯胺、邻硝基氯苯为原料,采用直接缩合法引入相转移催化剂合成邻硝基二苯胺。