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三羟基苯酸

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B., aluminum oxide (Al2O3), cupric 2, 4-dihydroxy-benzoate ,cupric adipate and lead phthaiate were used as inert materials.

三氧化二铝(A12O3)、2, 4-二羟基苯甲酸铜、己二酸铜和邻苯二甲酸铅等惰性材料的相容性。

Ingredients:water,glycerin,caprylic/capric triglyceride, cetyl alcohol ,propylene glycol,glyceryl stearate,panthenol,betaine dimethicone,simmondsia chinensis, rosa rugosa flower extract,allantoin,carbomer,parfum,triethanolamine,tocopheryl acetate,methyl paraben,propyl paraben,creatine,tetrasodium edta,phenoxyethanol,caprylyl glycol,sorbic.

成分:去离子水,甘油,辛酸/葵酸三甘油酯,鲸蜡醇,丙二醇,硬脂酸甘油酯,泛醇,甜菜碱,聚二甲基硅氧烷,霍霍巴油,玫瑰花提取液,尿囊素,卡波姆,香精,三乙醇胺,生育酚乙酸酯,对羟基苯甲酸甲酯,对羟基苯甲酸丙酯,肌酸,乙二胺四乙酸四钠,苯氧乙醇,辛二醇,山梨酸。

The problems which existed in the D-p-hydroxyphenylglycine concentrative crystallization process are analyzed.

分析了对羟基左旋苯甘氨酸母液浓缩结晶过程存在的问题,介绍了三效热泵蒸发结晶工艺。

This paperindicated that it was good for condensation reaction when benzene-ring bearingelectron-attaching groups. It also showed that and the 6-hydroxyl group could bereacted with acyl halide, haloid ether and halo alkene, but not with halo alkane. It wasnot only the first time to find that the reaction product of D-mannitol and aromaticaldehyde is tri-condensation derivatives, but also the first time to obtain thep-phthaldehyde-sorbitol derivatives containing eight hydroxyl groups.

研究发现:苯环上有吸电子基团时对缩合反应有利;多元醇缩醛衍生物6-羟基除与酰氯反应外,也能和卤代酸酯、溴代烯反应,但不与卤代烷反应;首次发现D-甘露醇与醛反应主要得到三缩合物;首次合成了含有8个羟基的对苯二甲醛和山梨醇的缩合物。

Fourteen new pyrethroids containing isoxazole were designed and synthesized from 4-isopropyl-3-substituted phenyl-5-hydroxyl isoxazoles as major material, whose structures were also characterized by IR, 1H NMR and elemental analysis.

以4-异丙基-3-取代苯基-5-羟基异噁唑和3-苯氧基苄基溴为原料,三乙胺为缚酸剂,设计并合成了14个未见报道的4-异丙基-3-取代苯基-5-异噁唑基-(3'-苯氧基)苄基醚。通过红外光谱、核磁共振、元素分析等手段,确证了它们的化学结构。

In Chapter 3, the separation of Fe〓, Co〓, Ni〓, Zn〓, Cu〓 by CE in the presence of imidazole or phenylamine as UV-absorbing background electrolyte and α-hydroxybutyric acid as the complexing agent with indirect UV absorbance was investigated.

在第三章,研究了以咪唑或苯甲胺为背景吸收电解质,α-羟基异丁酸为络合剂,采用毛细管离子电泳间接紫外法测定了镍矿石中Ni,Co,Cu的含量。

Mainly engaged in sodium azide, barium azide, three phosphorus nitride Friday, phenyl isothiocyanate, 1 - phenyl -5 - mercapto-tetrazole, 4 - dimethylamino-pyridine, 2 - mercapto--5 -- methyl-1,3,4 thiadiazole, N-hydroxy phthalimide, anhydrous betaine and betaine hydrochloride, such as fine chemical raw materials and medicine, pesticide intermediates of the development, production and sales.

主要从事叠氮化钠,叠氮化钡,五氮化三磷,异硫氰酸苯酯,1-苯基-5-巯基四氮唑,4-二甲氨基吡啶,2-巯基-5-甲基-1,3,4噻二唑,N-羟基邻苯二甲酰亚胺,无水甜菜碱及甜菜碱盐酸盐等精细化工原料及医药、农药中间体的开发、生产和销售。

Novel rod like phenylene thiophene based polyhydroxy amphiphiles, derivatives of gallic acid combining three hydrophilic 2,3-dihydroxypropyloxy groups and one alkyl chain via central aromatic linking units, have been synthesized by using Ni, Pd(0) catalyzed coupling reaction as key steps.

以Ni, Pd (0)催化的C-C偶合反应为关键步骤合成了基于苯联噻吩的棒状型多羟基两亲性分子,它们是以棒状芳香核为中心部分,一端带三重亲水的2,3-二羟基链,另一端为带一条烷基链的没食子酸衍生物。

Feeding for 24h by third instar larvae of the maize stalk borer induced farnesyl pyrophosphate synthase gene expressing, but had no effect on expression of AOC, BX9, PAL and PR2a genes and DIMBOA content.

3玉米螟3龄幼虫处理24h能诱导玉米根中法呢烯基焦磷酸合成酶基因表达,但不能诱导丙二烯氧化物环化酶、β-1,3葡聚糖酶基因(PR2a)、糖基转移酶(BX9)、苯丙氨酸转氨酶基因表达,同时对第二叶和根中丁布含量无显著影响,使第二叶对羟基苯甲酸及第三叶丁布、对羟基苯甲酸、香草酸含量显著降低。

This research utilized the method of organic synthesis, researching different amounts and positions of hydroxy-substituted benzoic acid and serotonin into amide reaction, so as to produce a series of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10). Accordingly, this study conducts the following four tests. I. The activity of antioxidant and the experiment of ability to scavenge DPPH free radical, II. The ability of overall antioxidant—the activity of TEAC, III. The activity test of inhibit Tyrosinase, and IV. The study of absorbing UV / VIS Spectrophotometers. This study use trolox, arbutin, and octyl salicylate as the control groups, and to test the ability of anti-oxidation, the activity of inhibit Tyrosinase, and the ability of absorbing UV. This research ultimately intends to investigate the applied value of those compounds into cosmetics.

本研究主要利用有机合成的方法,将不同数量及不同位置的羟基取代苯甲酸化合物与色洛冬宁进行醯胺化反应后,得到一系列的多羟基取代之N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10),进行四种不同活性测试方法:一、清除DPPH自由基能力抗氧化活性测试;二、总抗氧化能力活性测试;三、抑制酪胺酸酶活性美白测试;四、紫外线/可见光光谱仪吸收测试,并以水溶性维生素E、熊果素、水杨酸辛酯当作对照组,探讨其抗氧化能力、抑制酪胺酸酶的活性能力与吸收紫外线能力,再进一步探讨其应用於化妆品上的价值。

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你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。