• 南极永久性积雪空气分析大气历史溴化物化物仿二氯甲

    Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.

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  • 目的建立溴芬酸原料二氯甲烷、1,2-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.

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  • 前言:二氯为原料,为溶剂,在碱性条件下合成1,2-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%.

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  • 建立毛细管气相色谱测定磺酸齐拉西酮中残留溶剂乙醇异丙醇二氯甲正己烷四氢呋喃D MF、丙的残留量。

    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.

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  • 聚环氧丙烷PAC复配,不仅使絮凝效果更佳,而且降低处理成本

    Using polyamine flocculants with PAC, not only shows better flocculation performance, but also can lower the water treatment cost.

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  • 以过氧化酰(BPO)为引发剂,12 -乙烷溶液中进行了丙烯酸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.

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  • 其它一些很重要药物也是如此这包括流行抗过敏泼尼松、糖尿病药物双胍高血压用药地平。

    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.

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  • 原料,合成一种新型的激光光敏刺——4 -苯氧基酮(PBZP)。

    A new photoinitiator, 4-phenoxy benzophenone (PBZP), was synthesized and characterized using diphenyl ether and benzoyl chloride as raw material.

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  • 方法:2氨基45氧基为原料,分别经过化、代、取代等反应,合成五种目标化合物。

    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.

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  • 综合研究结果表明,聚环氧丙烷—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.

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  • 环氧丙烷胺为反应单体,过硫酸钾-硫酸钠引发合成了阳离子聚合物粘土稳定pta

    Minor cationic polymer clay stabilizer PTA was synthesized with epichlorohydrin and dimethylamine as monomers and potassium persulfate - sodium sulfite as initiating agent.

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  • 结果表明阳离子度、分子量以及聚合物的结构影响聚环氧丙烷—凝效果重要因素。

    The experimental results show that the cationicity, the molecular weight and the structure have a great effect on the flocculation efficiency of polyamine flocculants.

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  • 对苯重要有机合成中间体合成化学领域着非常重要作用

    Terephthaloyl dichloride is a useful organic synthetic intermediate, and plays an important role in organic chemistry field.

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  • 课题原料,氧基苯反应生成邻氧基苯酰基铁,再与一系列反应合成亚,最终还原茂铁氨基化合物

    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.

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  • 丙烯酸、、环氧丙烷为原料,通过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.

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  • 结果表明二氯喹啉酸苯达松、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.

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  • 本文介绍一种禽肉二氯吡啶酚残留量快速检验方法

    In this paper, introduced a fast detection method of Clopidol residual amount in poultry meat.

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  • 介绍一种采用代替石灰反应生产仿的同时联产N,N-酰胺工艺

    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.

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  • 方法对硝基苯为起始原料,经缩合还原、重氮化、偶合、成盐等反应制得巴

    METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.

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  • 发明属于医药技术领域公开了一种盐酸酚酯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.

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  • 方法以1,4-丁烯醇为原料,经过酯化环氧化、氨解开环四碘对苯反应合成目标产物。

    METHODS The title compound was synthesized from 2-butene-1,4-diol, via esterification, epoxidation, amination, then amidation with tetraiodoterebenzoyl chloride.

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  • 2,4-羟基酯为原料经过反应水解反应羧反应合成2,4-二氯间苯酚。

    The compound 2,4-dichlororesorcinol was obtained from the starting material 2,4-dihydroxybenzoate via chlorinated reaction, hydrolysis and decarboxylation.

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  • d酒石酸反应生成d 2, 3酰酒石酸,后者于丙酮水溶液中水解得到拆分剂d 2, 3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.

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  • 3,5— 作为物,采用液相色谱(HPLC)法同时测定了百合剂水剂中的两种有效成份百草敌和

    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.

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  • 解决胶原免疫原性,采用经氯甲酸对硝基苯酯活化的单氧基聚乙醇来修饰胶原酶。

    In order to overcome the immunogenicity of collagenase, the enzyme was modified with monomethoxypolyethylene glycol 5000 (mPEG) activated by p nitrophenyl chloroformate.

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  • 采用低温溶液法共缩聚反应合成了TPC摩尔分数为0.05~0.15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.

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  • 氧基苯酚*原料四步反应合成6-(2-氧苯氧基)-1,4-氢-4-氧代-3-喹啉羧酸。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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  • 氧基苯酚*原料四步反应合成6-(2-氧苯氧基)-1,4-氢-4-氧代-3-喹啉羧酸。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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