从南极永久性积雪空气分析大气卤烃的历史:甲基溴化物,甲基氯化物,氯仿和二氯甲。
Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.
目的建立溴芬酸钠原料中二氯甲烷、甲苯、1,2-二甲氧基乙烷、乙酸乙酯、乙醇残留量测定方法。
Objective To establish a method for detection of dichloromethane, 1,2-dimethoxyethane, toluene, ethyl acetate and ethanol in bromfenac sodium.
前言:以邻苯二酚和二氯甲烷为原料,二甲亚砜为溶剂,在碱性条件下合成1,2-亚甲二氧基苯,产品收率达到73.4%;
2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.
建立了毛细管气相色谱法测定甲磺酸齐拉西酮中残留溶剂乙醇、异丙醇、二氯甲烷、正己烷、四氢呋喃、D MF、丙二酸二甲酯的残留量。
A capillary GC method with FID detector for the determination of residual organic solvents ethanol, isopropanol, dichloromethane, n-hexane, tetrahydrofuran, DMF and dimethyl malonate was established.
聚环氧氯丙烷—二甲胺与PAC复配,不仅可使絮凝效果更佳,而且可降低处理成本。
Using polyamine flocculants with PAC, not only shows better flocculation performance, but also can lower the water treatment cost.
以过氧化二苯甲酰(BPO)为引发剂,在1 ,2 -二氯乙烷溶液中进行了丙烯酸接枝ABS树脂。
The graft copolymerization of acrylic acid onto acrylonitrile butadiene styrene(ABS) terpolymer was initiated by benzoyl peroxide (BPO) in 1,2 dichloroethane solution.
其它一些很重要的药物也是如此,这包括流行的抗过敏药泼尼松、糖尿病药物二甲双胍和高血压用药氨氯地平。
The same is true for dozens of other crucial medicines, including the popular allergy medicine prednisone; metformin, for diabetes; and amlodipine, for high blood pressure.
以二苯醚与苯甲酰氯为原料,合成了一种新型的激光光敏刺——4 -苯氧基二苯甲酮(PBZP)。
A new photoinitiator, 4-phenoxy benzophenone (PBZP), was synthesized and characterized using diphenyl ether and benzoyl chloride as raw material.
方法:以2氨基4 ,5二甲氧基苯甲酸为原料,分别经过环化、氯代、取代等反应,合成了五种目标化合物。
The five quinazoline compounds were prepared by using 2 amino 4,5 dimethoxy benzoic acid as original material, which underwent ring closing, halogenation and substitution.
综合研究结果表明,聚环氧氯丙烷—二甲胺是一种高效多功能的有机絮凝剂。
The experimental results show that polyamine polymers are organic flocculants with high performance and multi-function.
以环氧氯丙烷、二甲胺为反应单体,过硫酸钾-亚硫酸钠为引发剂合成了小阳离子聚合物粘土稳定剂pta。
Minor cationic polymer clay stabilizer PTA was synthesized with epichlorohydrin and dimethylamine as monomers and potassium persulfate - sodium sulfite as initiating agent.
结果表明,阳离子度、分子量以及聚合物的结构是影响聚环氧氯丙烷—二甲胺絮凝效果的重要因素。
The experimental results show that the cationicity, the molecular weight and the structure have a great effect on the flocculation efficiency of polyamine flocculants.
对苯二甲酰氯是重要的有机合成中间体,在合成化学领域起着非常重要的作用。
Terephthaloyl dichloride is a useful organic synthetic intermediate, and plays an important role in organic chemistry field.
本课题以二茂铁为原料,与邻甲氧基苯甲酰氯反应生成邻甲氧基苯甲酰基二茂铁,再与一系列胺反应合成亚胺,最终还原为二茂铁氨基化合物。
The title compounds were obtained by the reduction of the corresponding ferrocenyl imines, which were prepared from ferrocene and o-anisic acid chloride, followed by amination with aromatic amines.
以丙烯酸、二甲胺、环氧氯丙烷为原料,通过曼尼希反应制得两性离子单体。
Amphoteric monomer is prepared with acrylic acid, dimethylamine, and chloroethanol by Mannich reaction.
结果表明,二氯喹啉酸与苯达松、二甲四氯钠盐两两混用均表现为不同程度的增效作用。
The results showed that there were synergism between quinclorac and bendazone, quinclorac and MCPA-Na, bendazone and MCPA-Na.
本文介绍一种禽肉中二氯二甲吡啶酚残留量的快速检验方法。
In this paper, introduced a fast detection method of Clopidol residual amount in poultry meat.
介绍了一种采用二甲胺代替石灰与氯油反应,在生产氯仿的同时联产N,N-二甲基甲酰胺的新工艺。
In this paper, a new chloroform production process by reaction of chlorinated oil with dimethyl amine instead of lime is introduced, in which N, N- dimethyl methanamide is coproduct.
方法以对硝基苯甲酰氯为起始原料,经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。
METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
本发明属于医药技术领域,公开了一种盐酸甲氯酚酯与聚乙二醇的药物组合物及其制备方法。
The invention belongs to the technical field of medicine, and discloses a drug composition of meclofenoxate hydrochloride and polyethylene glycol and a preparation method thereof.
方法以1,4-丁烯二醇为原料,经过酯化、环氧化、氨解开环,再与四碘对苯二甲酰氯反应合成目标产物。
METHODS The title compound was synthesized from 2-butene-1,4-diol, via esterification, epoxidation, amination, then amidation with tetraiodoterebenzoyl chloride.
以2,4-二羟基苯甲酸甲酯为原料,经过氯代反应、水解反应、脱羧反应合成2,4-二氯间苯二酚。
The compound 2,4-dichlororesorcinol was obtained from the starting material 2,4-dihydroxybenzoate via chlorinated reaction, hydrolysis and decarboxylation.
苯甲酰氯和d酒石酸反应生成d 2, 3二苯甲酰酒石酸酐,后者于丙酮水溶液中水解得到拆分剂d 2, 3二苯甲酰酒石酸。
The resolving reagent, D-2, 3-dibenzoyl tartaric acid was obtained by hydrolyzation of D-2, 3-dibenzoyl tartaric anhydride prepared by reaction of benzoyl chloride with D-tartaric acid.
将3,5— 二氯苯甲酸作为内标物,采用液相色谱(HPLC)法同时测定了百甲合剂水剂中的两种有效成份百草敌和二甲四氯钠。
In this paper, 3,5-Diclorobenzic acid was used as the internal standard to determinate the effective costituces in banvel·NH(CH3)2-MCPA·Na solution by HPLC.
为解决胶原酶免疫原性,采用经氯甲酸对硝基苯酯活化的单甲氧基聚乙二醇来修饰胶原酶。
In order to overcome the immunogenicity of collagenase, the enzyme was modified with monomethoxypolyethylene glycol 5000 (mPEG) activated by p nitrophenyl chloroformate.
采用低温溶液法共缩聚反应合成了对苯二甲酰氯(TPC)摩尔分数为0.05~0.15的改性间位芳香族聚酰胺( PMIA)共聚物。
Modified meta-aramid(PMIA) copolymer with TPC mole fraction of 0.05~0.15 was prepared by low-temperature-solution polycondensation in DMAc.
以邻甲氧基苯酚与对氯*为原料,经四步反应合成6-(2-甲氧苯氧基)-1,4-二氢-4-氧代-3-喹啉羧酸乙酯。经抗鸡球虫实验证明具有抗球虫效果。
The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.
以邻甲氧基苯酚与对氯*为原料,经四步反应合成6-(2-甲氧苯氧基)-1,4-二氢-4-氧代-3-喹啉羧酸乙酯。经抗鸡球虫实验证明具有抗球虫效果。
The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.
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