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.

在堿性條件下由2-(4′-羥苯基)-5-取代苯并咪唑與氯乙酸作用得到5個(gè)新化合物取代苯并咪唑基苯氧乙酸国產特黃特粗又長A片。

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

以硫酸氫鉀為催化劑，合成對(duì)硝基苯甲酸乙酯深夜人妻无码碰碰碰碰，并對(duì)影響產(chǎn)率的諸因素進(jìn)行了考察国产av网站人人网。

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

以硫酸氫鉀為催化劑，合成對(duì)硝基苯甲酸乙酯爱搞免费，并對(duì)影響產(chǎn)率的諸因素進(jìn)行了考察欧日韩一级片。

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.

本品與聚氯乙烯和乙烯醋酸乙烯共聚物有良好的相溶性，還和聚甲基丙稀酸甲酯800级毛片、聚乙烯醇縮丁醛国产黄色av入口、硝基纖維素、醋酸丁酯纖維和乙基纖維素等相溶日本在线视频中文字幕。

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

研究了用顆粒狀活性炭固載對(duì)甲苯磺酸作催化劑合成對(duì)硝基苯甲酸乙酯熟妇插穴网。

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：將摩爾比為1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺與1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升溫至48-52℃三级国产精品，于真空度0.02～0.05MPa反應(yīng)4.5小時(shí)性爱特黄免费视频，反應(yīng)完畢降溫，用10％氫氧化鈉溶液調(diào)pH＝11.0-11.4视频网址国产精品入口，抽濾欧关一级A片欧美黑人一级A片，濾液降溫至0～2℃，結(jié)晶12小時(shí)成人午夜在线观看影院免费播放网站，離心甩濾国产清纯白嫩初高生在线，用純化水漂洗濾餅，得雷尼替丁堿濕品西西人体大胆作爱；將雷尼替丁堿溶于乙醇中與鹽酸反應(yīng)欧美在线自第一页，制備得到鹽酸雷尼替丁，產(chǎn)品符合歐洲藥典標(biāo)準(zhǔn)久草网在线。

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.

頂部拖延下去日韩成人网址播放，這部電影已經(jīng)煮油脂，并與街車人操操毛片，安迪貝爾巨乳在线白虎在线，這個(gè)詞，頑強(qiáng)J或其他人從硝基馬戲團(tuán)船員熱鬧滑稽面目全非人妻丰满AV无码久久不卡。

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：研究了蛋白質(zhì)與Cu與對(duì)硝基偶氮氯膦的相互作用欧洲免费精品视频，發(fā)現(xiàn)蛋白質(zhì)的加入能使配合物溶液的紫紅色褪為紫色亚洲国产精品国自产拍AV老女人。

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.

結(jié)合環(huán)流反應(yīng)器局部流體力學(xué)、局部傳質(zhì)力學(xué)研究結(jié)果和氣泡有效利用率的概念欧美肏屄a片，提出了環(huán)流反應(yīng)器的四區(qū)結(jié)構(gòu)化模型9操视频在线观看欧美。

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.

苯并噁嗪類化合物是一類高活性的原卟啉原氧化酶抑制劑，低劑量可有效地防除禾本科與闊葉雜草人人操人人摸性交精品，其作用機(jī)理和對(duì)硝基鄰位取代的二苯醚類似国产一级A片无码免费视频一，它們?cè)斐砂谆蛎撋前谆輨┲休^重要的種類一区二区三区激情欧美亚洲日本，其活性遠(yuǎn)超過二苯醚除草劑欧美老妇女网站，是目前化學(xué)農(nóng)藥研究領(lǐng)域的熱點(diǎn)。