二酸

The reaction of calcium L-threonate with hydrogen bromide in acetic acid readily yields (2S, 3S)-2, 4 -dibromo-3 -hydroxy butanoic acid which was further converted into methyl (2s, 3S)-2,4-dibromo-3-hydroxybutanoate by treatment of methanol.

在化合物12上引入氨基甲酰基可用二氯磷异氰酸酯、氯乙酰异氰酸酯或氯磺酰异氰酸酯，随之引入的二氯磷酰基、氯乙酰基或氯磺酰基可分别用碳酸氢钠、N-甲基二硫代氨基甲钠或亚硫酸钠脱去。

Other Ingredients: Purified Soft Water, Green Tea Extract, Dimethicone, Sunflower Oil, Cyclomethicone, Stearyl Alcohol, Aloe Vera Gel, Deep Sea Algae Extract, Almond Oil, Glyceryl Tearate, PEG 100 Stearate, Polysorbate 20, Comfrey Extract, Jojoba Oil, Shea Butter, Kukui Nut Oil, Squalane, Glyceryl Caprylate/ Caprate, Caprylic / Capric Triglycerides, Panthenol (Vitamin B5), Babussu Oil, Marigold Extract, Camellia Kissi Oil, Cetyl Dimethicone, Carbomer, Beta Carotene, Ester-C,(Calcium, Sodium, Magnesium and Zinc Ascorbates, Ascorbyl Palmitate and L-Ascorbic Acid),Evening Primrose Oil, Methylparaben, Propylparaben, Triethanolamine, Phenoxyethenol, Imported Tropical Flower Oils.

其他成分：纯净水软，绿茶提取物，二甲基硅氧烷，葵花籽油，环，硬脂醇，芦荟凝胶，深海藻提取物，杏仁油，甘油Tearate，硬脂酸聚乙二醇100，吐温20，康弗里提取物，霍霍巴油，乳木果黄油，库奎坚果油，角鲨烷，甘油辛酸/癸酸，辛酸/癸三酸甘油脂，泛醇（维生素原B5），Babussu 油，金盏花精华，山茶花基西油，十六烷基二甲基硅氧烷，卡波姆，β胡萝卜素，酯- C中，（钙，钠，镁，锌Ascorbates，抗坏血酸棕榈酸酯和L -抗坏血酸），月见草油，甲酯，尼泊金丙酯，三乙醇胺，Phenoxyethenol，热带花卉进口油。

The results showed that hexadecanoic acid diethanolamide and Daqing crude oil has favorable compatibleness, the binary system containing hexadecanoic acid diethanolamide(with the mass concentration of 0.2%) and HPAM(with the concentration of 1000mg/L)can produce ultralow interficial tensions 8.94×10~(-3mN/m against Daqing crude oil; the three compound combination system containing hexadecanoic acid diethanolamide(with the mass concentration of 0.2%) and HPAM(with the concentration of 1000mg/L)and Na_2CO_3(0.1%)can produce ultralow interficial tensions 6.34×10~(-4mN/m against Daqing crude oil.

其中，十六酸二乙醇酰胺与大庆四厂原油具有良好的配伍性，十六酸二乙醇酰胺0.2%、HPAM1000mg/L组成的二元驱油体系与大庆四厂原油可形成超低界面张力，最低可达到8.94×10~(-3)mN/m；十六酸二乙醇酰胺0.2%、HPAM1000mg/L、Na_2CO_31%组成的三元驱油体系与大庆四厂原油间的界面张力最低可达6.34×10~(-4)mN/m。

When they were added respectively. DMBQ+ ferulic acid and DMBQ+ resorcin had synergistic effect, the haustorium formation rate doubled in this treatment. DMBQ +ferulic acid + resorcin together with 6-BA+ GA3+ IBA showed the most effective inducing function, and the haustorium formation rate was 13.3%. The results above showed that there were different chemical signal substances functioned in the process of germ tube germination and haustorium formation of Cistanche deserticola respectively.

DMBQ与阿魏酸和DMBQ与间苯二酚组合均表现出协同作用，使肉苁蓉种子形成吸器率增加1倍；DMBQ +阿魏酸+间苯二酚与激素6-BA + GA3 + IBA共同组合吸器形成率提高到13.3%，说明寄生植物肉苁蓉种子萌发过程芽管和吸器形成分别由不同的化学信号物质调控，DMBQ、阿魏酸和间苯二酚在诱导肉苁蓉种子萌发过程形成吸器具有决定性作用。

In order to overcome the fault of 5'-GMPNa2 product quality, such as amorphic state, lower purity and inconstant water content, a systematical study on the crystallization process of 5'-GMPNa2 had been presented in this thesis. A new crystallization process has been developed, with which the high quality crystals of 5'-GMPNa2 can be obtained.

针对目前国内生产5'-鸟苷酸二钠基本为无定形体，且产品纯度低、水含量不稳定等问题，本文对5'-鸟苷酸二钠的结晶过程进行了系统的研究，提出了新型精制结晶工艺，解决了制备高质量的I型5'-鸟苷酸二钠晶体的问题。

objective to observe the effect of unithiol for the treatment of arsenic apicitis.methods sixty-three patients received therapy with 5% unithiol and the therapeutic effect was retrospectively analyzed.results 59 of 63 teeth were cured with the cure rate 92%; no effect was observed in 4 cases.conclusion unithiol can be effectively used for the treatment of arsenic apicitis.

目的 观察二巯基丙磺酸钠治疗砷性根尖炎的疗效。方法 63例患者患牙63颗接受5%二巯基丙磺酸钠治疗，回顾分析其疗效。结果 63颗患牙经本药治疗后59颗显效，占93.7%；4颗无效。结论二巯基丙磺酸钠可有效并安全用于治疗砷性根尖炎。

Amino-6-methoxy Benzothiazole 99%、2-Amino Benzothiazole 99%、Veratraldehyde 99%、Veratric Acid 99%、1,2- Dimethoxy Benzene 99%、6-Nitroveratric Acid 97%、2,5-Dichlorobenzoic Acid 99%、4-Chloro-3-Nitrobenzoic Acid 99%、 3-Nitrobenzole Acid 98%、p-Methoxybenzoie Acid 99%、Anisole 99.5%、p-Methoxyacetophenonc 99%、(2'-Chloroethyl) Benzene 99%、(2'-Bromoethyl) Benzene 99%、N,N-Diethyi-m-Toiuamide 99%、Aminoacetonitrile Hydrochloride 98%、 Alkyl Diphenyl Phosphate Estrel 98%、5-Chloro-2-benzothiazolone 99%、6-bromo-2-naphthol 98%、6-Nitro-Veretric Acid Estrel 97%、4-chloro phenoxyaeetic 99

2-氨基-6-甲氧基苯骈噻唑、2-氨基苯骈噻唑、藜芦醛、藜芦酸、藜芦醚、6-硝基藜芦酸、2，5-二氯苯甲酸、3-硝基-4-氯苯甲酸、3-硝基苯甲酸、对甲氧基苯甲酸、苯甲醚、对甲氧基苯乙酮、β-氯代苯乙烷、β-溴代苯乙烷、N，N-二乙基间甲苯甲酰胺、氨基乙腈盐酸盐、磷酸二苯月桂酯、5-氯-2-苯骈噻唑酮、6-溴-2-萘酚、6-硝基藜芦酸甲酯、4-氯苯氧乙酸

We introduce two pyridinedicarboxylate (2,5-H2pdc and 2,6-H2pdc) ligands, under hydrothermal or solvothermal condition, to yield 7 complexes with InCl3. Complex 17 presents a rare example of chiral binodal (4,8)-connected lattice with self-interpenetration.

选择了两种吡啶二羧酸配体： 2，5-吡啶二羧酸(2，5-H2pdc)； 2，6-吡啶二羧酸(2，6-H2pdc)和InCl3反应合成了七个配位化合物其中17表现了一例少有的手性的(4，8)连接的双节点自穿插拓扑结构。

Results: Nine compounds were obtained from the ethyl acetate fraction of C. speciosa and were identified as methyl chlorogenate, 5-O-cafeoyl quinic acid butyl ester, quinic acid butyl ester, 5-hydroxymethyl-furan-2-carbaldehyde, triacontanoic acid,-epicatichin, 7,8-dihydroxy-coumanrin, protocatechuic acid ethyl ester, and protocatechuic acid.

结果：从皱皮木瓜的乙酸乙酯萃取部位分离鉴定了9种化合物，分别为绿原酸甲酯，5-O-咖啡酰基－奎宁酸丁酯，奎宁酸丁酯，5-羟甲基－2-糠醛，三十烷酸，-表儿茶素，7，8-二羟基香豆素，3，4-二羟基苯甲酸乙酯，原儿茶酸。

Polyols can be divided into latex polyol and dispersion polyolaccording to the way of preparation. In this paper, acrylic latex polyol and acrylic dispersionpolyol were synthesized respectively. One kind waterborne polyisocyanate, which was waterbornehexamethylenediisocyanate trimer, was obtained by hydrophilic modification. Andisophorone diisocyanate trimer (T1890E), which can formulate into 2K-WPU coatings withpolyols, was selected from the unmodified polyisocyanates.

本文合成了两种羟基组分：丙烯酸乳胶多元醇和丙烯酸分散体多元醇，亲水改性得到了一种水性多异氰酸酯组分：水性六亚甲基二异氰酸酯三聚体，同时在未改性的多异氰酸酯组分中遴选了一种多异氰酸酯：异佛尔酮二异氰酸酯三聚体(T1890E)，可用来组成双组分水性聚氨酯涂料。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。