Some materials were synthesized in this paper at first, 1-nitro-2-pentanol was synthesized with nitromathane and butyraldehyde and the yield was 70.2%; l-nitro-2-pentanol was reduced to 1 -amino-2- pentanol with iron and the yield was 65.2%.

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Lysergic acid diethylamide, LSD, LSD-25, or acid, is a semisynthetic psychedelic drug of the tryptamine family.

麥角酸二乙酰胺一级啪啪啪免费视频， LSD ， LSD-25真实国产激情在线观看网站视频，或者酸国产精品欧美在线极品，是半合成吲哚乙胺類致幻劑。

By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐為起始原料欧美日本高清在线不卡视频，經(jīng)跹侵奚面米酆峡耐基化国产精品视频一区二区三区四区、關(guān)環(huán)和磺化三步反應(yīng)合成了3-十二烷基蒽醌磺酸；并進(jìn)一步改進(jìn)和優(yōu)化了合成工藝條件：即在催化劑三氯化鋁過量50%并有三乙胺存在的條件下两性激情综合网，中間體2-（4-十二烷基苯甲跎逶峦荆基）苯甲酸收率為72.45%；關(guān)環(huán)反應(yīng)采用氯仿作溶劑亚洲三级电影网站，利用類似分水器的裝置有效控制反應(yīng)溫度以減少碳化在线国产视频一区二区三区，2-十二烷基蒽醌的收率為68.1%。

Ethyl dicyanopropionate was synthesized by one-step reaction with sodium cyanide, paraformaldehyde and ethyl cyanoacetate in solvent.

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Seven compounds have been isolated from hard coral Acropora pulchra. These compounds are:pentadecoic acid, heptadecyl ester;(2)n-cetanol;(3)batyl alcohol;(4) N- [ 1 --2-hydroxyl--3,7-heptad-ecadienal] -hexadecanamide;(5)1 -0-hexanoyl-glycerol ester;(6)thymine;(7)uracil. Their structures were determined by IR, MS, HNMR, 13CNMR analysis.

從北海佳麗鹿角珊瑚Acropora pulchra乙醇提取液的乙酸乙酯部分分離出七個(gè)化合物成年女人vr免费视频播放，經(jīng)IR、MS日韩一区二区免费精品观看、~1HNMR少妇野战一级A片、~(13)CNMR等波譜方法鑒定高清日韩精品更新视频，其結(jié)構(gòu)分別為：(1)十五酸十七酯欧美最新精品视频在线，(2)正十六碳醇，(3)鯊肝醇最近的日韩2019中文字幕在线，(4)N-1-羥基甲基-2-羥基—-3毛片最新网址，7-十七碳二烯基十六酸酰胺，(5)1-正十六酸甘油酯淫荡的视频，(6)胸腺嘧啶欧美牲交A欧美牲交aⅴ一，(7)尿嘧啶。

A process for the carbonylation of allylic butenyl ether (for example, methyl crotyl ether, 3-methoxybutene-1 and mixtures thereof) or mixture of butadiene and alcohol and production of beta-gamma unsaturated carboxylic acid esters (for example, methyl-3-pentenoate) utilizing a rhodium-containing catalyst for example, dicarbonylacetylacetonate rhodium(I or the like promoted with an iodide-containing compound (for example, HI, AlI3, SnI4, TiI4, CrI3, and CoI2 or the like).

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A new corrosion-scale inhibitor composed of citric acid/hydroxy ethylidene diphosphonic acid/polyitaconic acid-styrene sulfonic acid copolymer exhibited a good inhibition efficiency on corrosion and scale-forming, it can be used in circulating cooling water systems.

新型緩蝕阻垢劑檸檬酸/羥基乙叉二膦酸／聚衣康酸-苯乙烯磺酸有優(yōu)良的抗腐蝕性能和阻垢性能，可用于循環(huán)冷卻水系統(tǒng)欧美黄色精品。

We have investigated on the chemical constituents of Nepeta partite collected from Gansu Zhuanglang, and twenty eight compounds were isolated from the methanol extraction of this species by chromatography techniques. Twenty five compounds were identified by means of chemical and spectra methods IR, FABMS, EI-MS,〓, DEPT, and 2D NMR）, among which four compounds were new as isopimar-15-en-3β, 8β, 20-triol; phenylethanal-3-O-（2'-glycerin）-5-O-β-D-glucopyranoside; 3-O-linolenoylglyceryl-6'-O-(α-D-galactopyranosyl）-β-D-galactopyranoside; ethyl rosemarinate.

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In this paper, the synthesis of polyamide acid resin, with 4, 4′-diam-inodiphenyl ether and pyromellitic dianhyride as monomers and dimethylacetamide as solvent, is reported; the preparation of polyimide fiber from PAA resin by dry- spinning method is described; and the effects of various factors of operating conditions upon the mechanical properties of the fiber is discussed.

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Objective To establish a HPLC method for the determination of aceclofenac in human plasma.Methods Acidified samples of plasma (500μL) were extracted with 4 mL of ethyl acetate. The organic phase was evaporated to dryness by nitrogen at 40℃ water bath. The residue was redissolved in mobile phase and then was determined.

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