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,用氯代替无水乙醚合成铜铁试剂的新工艺。

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

以胺、硝基氯原料,采用直接缩合法引入相转移催化剂合成硝基胺。

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

以氯和甲酐原料，经四步工序合成马吲哚，总收率23．4％。

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

另外，服用氯乙胍的患者比服用安慰剂的患者有更明显的嗜睡、头昏、口干等症状。

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

主要介绍了四种氯甲醛的合成工艺路线,并比较利弊,阐述了对甲磺酰氯氯化水解法的优越性。

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,以间氯甲醛、溴钾原料合成间氯甲,分别研究了反应温度、反应时间、原料配比、溶剂的用量等条件对合成反应的影响,确定了最佳工艺条件。

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测复方制剂中氢溴美沙芬、愈创木酚甘油醚和马来氯那敏含量的方法。