• 得到酚钠,酚钠和2-乙醇得到2-氧基乙醇,与氯化锌反应得2,3-二氢苯呋喃产率50%。

    A mixture of phenol, sodium and 2-chloroethanol forms 2-phenoxyethanol, add zinc chloride, the product is 2,3-dihydrobenzofuran, yield 50%.

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  • 具有视黄衍生物类生物活性萘、二氢二氢苯并噻喃1,2,3,4-四喹啉羧酸的杂芳基酰胺

    Aryl or heteroaryl amides of tetrahydronaphthalene, chroman, thiochroman and 1,2,3,4-tetrahydroquinoline carboxylic acids having retinoid-like biological activity.

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  • 二氢喃具有类维生素A生物活性

    Chroman has retinoid-like biological activity.

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  • 巴布亚新几内亚部分地区,青蒿醚加醇和二氢青蒿素加哌喹分别治疗小儿恶性疟原虫疟疾间日疟的最成本效益治疗方案。

    A+L and DHA+PQ are highly cost-effective regimens for the treatment of paediatric P. falciparum and P. vivax malaria, respectively, in parts of Papua New Guinea.

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  • 例如碳酸钠,分别用来标定酸和溶液

    Examples are sodium carbonate and potassium acid phthalate which are used to standardize acid and base solutions.

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  • 乙酰、己甲酸可以使PV C结晶度增大

    Acetanilide and hexane diacid, potassium hydrogen phthalate could improve PVC crystallinity.

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  • 本文用自由基捕捉esr结合方法系统研究了各种取代光化反应中的活泼自由基。

    Active free radicals in the photochemical hydrogen abstraction reaction between benzophenone and aromatic amines have been studied systematically by combination of spin trapping reagents and ESR.

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  • 本文甲酸单晶微观结构特性讨论了晶面上特征层状包裹形成的结构影响因素。

    The formation of characteristic layered inclusions in the single crystal of potassium acid phthalate (KAP) is discussed in view of the effect of its microscopic structure.

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  • 甲酸(RAP)一种有机极性离。产型晶体。本文通过实验研究非极性轴方向的介电、DC电导、P -e曲线、光透过率等有关性能。

    Rubidium acid phthalate (RAP) is an ionic organic polar crys-tal. In this paper, the experimental studies of its dielectric property, DCconductivity, P-E curve and transmission are reported.

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  • 氨磺酰-取代二氢吡喃,其制法作为药物诊断剂应用含有它的药物。

    Sulfamine-substituted benzodihydopyran, preparation method, use as medicine or diagnostic reagent and medicine containing same.

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  • 甲酸单晶一种有机极性离子型晶体

    Rubidium acid phthalate (EAP) is an ionic organic polar crystal.

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  • 本文采用相色谱HP-5毛细管,以甲酸物,用火焰离子化检测器对甲苄氟菊酯进行定性定量分析。

    A method for the determination of metofluthrin TC by GC with HP-5 capillary column, diisobutyl phthalate as internal standard and FID detector was described.

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  • 二氢-2-甲基-4--1,5-并硫氮杂卓重氮乙酸乙反应得到预期分子重排产物

    From the reaction of 2,3 dihydro 2 methyl 4 phenyl 1,5 benzothiazepines with diazozcetic ester an unexpected ring open product of the intramolecular rearrangement was obtained.

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  • 酸酐加入酸酐中,可使其放热反应减慢。

    Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride.

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  • 毛细管,以甲酸丁酯物,以火焰离子化检测器对杀虫剂氯烯炔菊酯原药进行定性定量分析

    A gas chromatographic method for quantitative and qualitative analysis of chlorempenthrin using a HP-5 capillary column and dibutyl phthalate as internal standard was described.

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  • 发明涉及一种用于制备链烯基化羟化芳族化合物二氢吡喃化合物和其衍生物的方法。

    The present invention relates to a process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives.

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  • 邻甲氧基对氯*原料四步反应合成6-(2-甲氧氧基)-1,4-二氢-4-氧代-3-喹啉羧酸。经抗鸡球虫实验证明具有抗球虫效果。

    The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.

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  • 邻甲氧基对氯*原料四步反应合成6-(2-甲氧氧基)-1,4-二氢-4-氧代-3-喹啉羧酸。经抗鸡球虫实验证明具有抗球虫效果。

    The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.

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