二硝基苯

The yields were better when DHPCE with nitro group in meta or ortho position of the benzene ring were hydrolyzed in basic conditions, while the hydrogenolysis and acidic reactions gave very poor yields.

当苯环的间位和对位存在硝基，碱性水解时，在二氢吡啶环的3位引入氯乙醇的酯能得到较好的收率；酸性水解和氢解法则不宜用来合成ADHPA。

We have 1500 tons / year of pure m-cresol production line, 1,000 tons / year of p-nitrobenzoic acid production line and 2000 tons / year production line of the one resorcinol.

我们拥有1500吨/年纯间甲酚生产线、1000吨/年对硝基苯甲酸生产线及2000吨/年间苯二酚生产线各一条。

Our company is the production of resorcinol, p-nitrobenzoic acid, pure phenol inter-professional manufacturers.

我公司是生产间苯二酚、对硝基苯甲酸、纯间酚的专业厂家。

Zirconium 3-nitrophthalate Zr(3-NO2-PHT2·2H20 was synthesized using 3-nitrophthalic acid, sodium hydroxide, and zirconyl nitrate as raw materials.

用3一硝基邻苯二甲酸、氢氧化钠和硝酸氧锆为原料，制备了3。

Methods The effects of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine and 7-nitroindazole (7-NI) on nitric oxide synthase activity, levels of dopamine、3,4-dihydroxyphenylacetic acid、homovanillic acid, and TH-immunostained postive nerve fibres in the striatum of mice were determined by using colorimetic analysis, HPLC with electrochemical detection, and immunohistochemical analysis.

用比色分析、高效液相色谱电化学及免疫组化法检测1-甲基-4-苯基-四氢吡啶和7-硝基吲唑（7-NI）对C57BL小鼠纹状体一氧化氮合酶活性，多巴胺、二羟基苯乙酸、高香草酸水平和酪氨酸羟化酶免疫阳性神经纤维的影响。

In part Ⅱ, electrophilic substitution reaction of indoles with aldehydes, ketones and 6-Nitro-vinyl catalyzed by dodecylbenzencsulfonic acid in water were studied in detailed.

本文第二部分详细研究了十二烷基苯磺酸水相催化吲哚与醛、酮和硝基烯的反应。

The reaction conditions for synthesizing methylhydroquinone using p nitrotoluene and conc.H\-2SO\-4 in the presence of catalyst were studied experimentally with the uniform design method,and the major influencing factors were researched.

用均匀设计法实验研究了对硝基甲苯与浓硫酸在催化剂作用下合成甲基对苯二酚的反应条件，考察了各种影响因素。

Moreover, according to supply and demand at home and abroad, and market price changes, and so on, will also be on the next year, oil, o-dichlorobenzene, nitrotoluene, oriented silicon steel sheet, seamless stainless steel tubes, marine boiler gearshafts, heat-sensitive business card printing, contact image sensor, wind power equipment and other products are no longer implemented a lower rate of tax on imported tentative recovery rates, and increase the fuel oils, distillation of sulfuric acid, sulphor, autoconer, fccl copper foil products imported to the tentative tax rate.

此外，根据国内外供需状况和市场价格变化等情况，明年还将对磷酸、成品油、邻二氯苯、硝基甲苯、取向性硅电钢宽板、不锈钢制无缝锅炉管、船舶用传动轴、热敏制卡头、接触式图像传感器、风力发电设备等产品不再实施较低的进口暂定税率，恢复最惠国税率，并适当提高了燃料油、升华硫磺、硫酸、自动络筒机、覆铜板用铜箔等产品的进口暂定税率。

The free phosphonic groups shielded most of the Lewis-acid sites on the surface of zirconia and imparted negative charges on the surface at high pH, resulting in excellent resolution for phenols and a great improvement for the separation of benzoic acids.

在该固定相上，酸性化合物的色谱性能得到明显改善，硝基酚、苯二酚等在氧化锆上通常难以洗脱的酚类化合物，均得到了高效分离。

The intermediate 2-amino-4-nitrophenol was diazotized and coupled with sodium 2,4-diaminobenzenesulfonate to form the high-strength leather brown RHM C.

制得的2-氨基-4-硝基苯酚经重氮化、与2，4-二氨基苯磺酸偶合，合成出高强度的皮革棕 RHM C.I。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失