苯甲酸甲酯
- 网络Methyl benzoate;methylbenzoate;Methyl Parahydroxybenzoate;methylparaben
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介绍用加介质减压精馏方法除掉与苯甲酸甲酯(BE)伴生的杂质。
The methods of using adding medium and vacuum rectification to get rid of the impurity associated with methyl benzoate are introduced .
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医药中间体3,4-二羟基-5-甲氧基苯甲酸甲酯的合成工艺改进
Improvement of the synthetic process of medical intermediate of 3,4-dihydroxy-5-methoxy methyl benzoate
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对羟基苯甲酸甲酯还原Np(Ⅵ)的动力学研究
Kinetics study of the reduction of np (ⅵ) by methyl p-hydroxybenzoate
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为了减少PET凝聚粒子,在PET聚合的预缩聚阶段,添加少量的对羟基苯甲酸甲酯或对羟基苯甲酸。
P - hydroxybenzoic acid or p-hydroxybenzoate is added at the beginning of PET prepolymerization to decrease coagulate particle content of PET .
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钾对苯甲酸甲酯加氢催化剂MnOx/γ-Al2O3的修饰作用
Effect of Potassium on the MnO_x / γ - Al_2O_3 Catalysts for Hydrogenation of Methyl Benzoate
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以3-甲氧基-4-羟基苯甲酸甲酯为起始原料,共经8步反应得到目标化合物,其中GX-1的反应总收率为39.6%。
The total yield of GX-1 was 39.6 % , which was synthesized from 3-methoxy-4-hydroxymethyl benzoate .
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通过向以羟基苯甲酸甲酯、丙酯为防腐剂的表面活性剂中接种ATCC标准绿脓杆菌和wild绿脓杆菌,对羟基苯甲酸酯中羟基位于不同位置的防腐剂防腐效能进行实验研究。
The antiseptic effect of hydroxybenzoic acid ester that hydroxyls lay in different position was studied by inoculated standard ATCC and " wild " pseudomonas bacilli to the surfactant systems using hydroxybenzoic acid esters as antiseptic .
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3,4,5-三甲氧基苯甲酸甲酯的制备
Preparation of Methyl 3,4,5-Trimethoxybenzoate with Inorganic Carrier Regent K_2CO_3 / Al_2O_3
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冷冻法制备邻氨基苯甲酸甲酯的研究
A Study of the Preparation of Methyl O-aminobenzoate by the Cooling Method
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氢化苯甲酸甲酯和乙酯时,被氢化物与溶剂之比率很重要的。
The ratio of solvent to reactant to be hydrogenated was critical .
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天然抗肿瘤化合物3-溴-4,5-二羟基苯甲酸甲酯的全合成
Total Synthesis of 3-Bromo-4,5-dihydroxy Benzoic Acid Methyl Ester with Natural Antitumor activity
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对羟基苯甲酸甲酯单晶生长和光学性能
The Crystal Growth and Optical Properties of Methyl p-hydroxybenzoate
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对苯甲酸甲酯化的合成工艺条件及抑菌效果进行了研究。
Effect of fatty acid methyl esterification methods on analysis of conjugated linoleic acids ;
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对二甲苯、对甲基苯甲酸甲酯合并氧化装置模拟与生产调优
The Mathematical Simulation and Optimization of Cooxidation plant of p-xylene , p-methylbenzene-carboxylic Acid Ester
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二羟基苯甲酸甲酯(6);
Protocatechuic acid methyl ester ( 6 );
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对甲氧基苯甲酸甲酯甲苯液相氧化法制取苯甲酸和苯甲醛
Preparation of Benzoic Acid and Benzaldehyde by the Oxidation Of Toluene in the Liquid Phase
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低氢酯比下苯甲酸甲酯加氢催化剂的研究
Study on Catalyst for Hydrogenation of Methyl Benzoate to Benzaldehyde at Low H_2 / Ester Molar Ratio
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β-肾上腺受体拮抗剂对-[2-羟基-3-(叔丁胺基)丙氧基]苯甲酸甲酯的合成
The synthesis of β - adrenoceptor antagonist methyl 4 - [ 2-hydroxy-3 - ( t-butylamino ) propoxy ] benzoate
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采用冷冻法代替传统的有机溶剂萃取法的新工艺,制备香料邻氨基苯甲酸甲酯。
The perfume methyl o-aminobenzoate was prepared by the cooling method in-stead of the classical method , organic solvent extraction .
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女性购买化妆品或面霜时希望了解这些商品是否含有基苯甲酸甲酯-一种曾在癌症肿瘤中找到的物质。
Women purchasing cosmetics or face creams want to know whether they contain methyl parabens which studies find concentrated in cancerous tumors .
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最近的媒体报道,一批来自上海零度可乐原液中含有“对羟基苯甲酸甲酯”防腐剂,引发了大家对饮料安全性的关注。
Recent media reports that a batch of Coke Zero concentrate from Shanghai contained the banned preservative methyl-p-hydroxybenzoate sparked concern about the safety of beverages .
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酯缩合反应:用甲氧基乙酸甲酯和4-三氟甲基苯甲酸甲酯为原料,在碱性条件下进行交叉酯缩合反应,同时消去甲氧基生成β-酮酸酯。
Crossed ester condensation reaction : Starting from methyl 4-trifluoromethyl benzoate and methyl methoxyacetate , β - carbonyl carboxylic ester was synthesized in basic condition via crossed ester condensation reaction .
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本文以对羟基苯甲酸甲酯、1,4-丁二醇、一缩二乙二醇、对苯二甲酸与氯化亚砜为原料通过三步合成了丁二醇酯液晶与一缩二乙二醇酯液晶。
In this paper , two polyester liquid crystal ( butanediol ester liquid crystal and diethylene glycol ester liquid crystal ) were synthesized with methyl p-hydroxybenzoate , 1,4-butanediol , diethylene glycol , terephthalic acid and thionyl chloride as materials through three steps .
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结果表明:0.1%双乙酸钠效果最为理想,保存10个月后毒力保持率达到37.5%,0.1%和0.3%对羟基苯甲酸甲酯10个月后毒力保持率分别为29.3%和33.3%。
The results showed that : the effect of 0.1 % sodium diacetate is desirable to preserve for 10 months to maintain virulence rate was 37.5 % , 0.1 % and 0.3 % of methylparaben 10 months to maintain virulence rates were 29.3 % and 33.3 % respectively .
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Bu2SnO催化反应耦合法清洁合成苯氨基甲酸甲酯二甲基亚砜&缩合反应中新的活化剂
Clean synthesis of methyl N-phenyl carbamate through coupling route with catalyst Bu_2SnO DIMETHYL SULFOXIDE-A NOVEL ACTIVATING AGENT IN CONDENSATION REACTION
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苯氨基甲酸甲酯(MPC)是一种重要的有机中间体,主要用于制备农药、医药和异氰酸酯等化学品。
Methyl N-phenyl carbamate ( MPC ) is an important organic intermediate , it was mainly used in the preparation of pesticide , medicine and isocyanate and other chemicals .
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苯氨基甲酸甲酯分解催化剂Bi-Zn复合氧化物的制备及其催化性能
Preparation and Catalytic Performance of Bi-Zn Composite Oxide Catalysts for Decomposition of Methyl N-Phenyl Carbamate
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离子液体中钯配合物催化苯胺氧化羰化制苯氨基甲酸甲酯
Oxidative Carbonylation of Aniline with Pd Complex-Ionic Liquid Catalyst System
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苯基脲与甲醇合成苯氨基甲酸甲酯的研究
Synthesis of Methyl N - Phenyl Carbamate from Methanol and Phenyl Urea
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苯氨基甲酸甲酯精馏残渣中二苯脲的回收方法
The methods of recovering diphenylurea from the residua of rectified methyl n-phenyl carbamate