查询词典 nitro-pentaerythrite

Three new fluo-rine-containing nitro benzimidazole derivatives were synthesized in the presence of 4-dimethylaminepyridine andtheir structure and configuration were confirmed by elemental analysis, IR, and 1HNMR.

在碱性条件下由2-(4′-羟苯基)-5-取代苯并咪唑与氯乙酸作用得到5个新化合物取代苯并咪唑基苯氧乙酸。

The effects of reactant ratio, catalyst amount, reaction time and temperature on the yield of p-nitro-ethyl benzoate were discussed.

以硫酸氢钾为催化剂，合成对硝基苯甲酸乙酯，并对影响产率的诸因素进行了考察。

P-Nitro-ethyl benzoate was synthesized with potassium bisulfate as catalyst for the first time.

以硫酸氢钾为催化剂，合成对硝基苯甲酸乙酯，并对影响产率的诸因素进行了考察。

This product and PVC and ethylene vinyl acetate copolymer has good histocompatibility, but also acrylic and poly methyl methacrylate, polyvinyl butyral, nitro cellulose, ethyl butyl acetate fibers and cellulose, such as miscibility.

本品与聚氯乙烯和乙烯醋酸乙烯共聚物有良好的相溶性，还和聚甲基丙稀酸甲酯、聚乙烯醇缩丁醛、硝基纤维素、醋酸丁酯纤维和乙基纤维素等相溶。

Synthesis of p-nitro-ethylbenzoate catalyzed by p-toluenesulfonic acid supported on granule activated carbon was studied.

研究了用颗粒状活性炭固载对甲苯磺酸作催化剂合成对硝基苯甲酸乙酯。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

To top things off, the film has been boiled in grease and sprinkled with the hilarious antics of Street Bike Tommy, Andy Bell, Crum, Tenacious J, and others from the Nitro Circus crew.

顶部拖延下去，这部电影已经煮油脂，并与街车人，安迪贝尔，这个词，顽强J或其他人从硝基马戏团船员热闹滑稽面目全非。

In part three, the absorption spectral behavior of binding reaction of cuprum- p-nitro-chlorophosphonazo Cu(Ⅱ-CPA-pN complex on bovine serum albumin was investigated.

第三部分：研究了蛋白质与Cu与对硝基偶氮氯膦的相互作用，发现蛋白质的加入能使配合物溶液的紫红色褪为紫色。

The experimental and theoretical results achieved in this work have also been confirmed in several industrial applications, including the design and operation of the reactors of cymene oxidation and p-nitro-ethyl-benzene oxidation.

结合环流反应器局部流体力学、局部传质力学研究结果和气泡有效利用率的概念，提出了环流反应器的四区结构化模型。

Benzoxazine compounds are one kind of highly active protoporhyrinogen oxidase inhibitors. These compounds can effectively control both monocotyledon weeds and dicotyledon weeds at lower dosage. The action mechanism is similar to p-nitro-o-substituted diphenylethers. They can result weeds albinism and decolorization, which are very important albinism herbicide.

苯并噁嗪类化合物是一类高活性的原卟啉原氧化酶抑制剂，低剂量可有效地防除禾本科与阔叶杂草，其作用机理和对硝基邻位取代的二苯醚类似，它们造成白化或脱色，是白化除草剂中较重要的种类，其活性远超过二苯醚除草剂，是目前化学农药研究领域的热点。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。