硫氰酸基的

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。

In order to find high active pesticide containing heterocycle, six novel terephthaloyl bisthioureas containing 1, 3, 4-thiodiazole were synthesized by the reaction of 2-amino-5-alkyl-1, 3, 4-thiodiazoles with terephthaloyl diisothiocyanate.

摘 要：为寻找高活性的含杂环农药，由中间体5-烷基-2-氨基-1， 3， 4-噻二唑与对苯二甲酰基二异硫氰酸酯反应，合成6种新的含1， 3， 4-噻二唑环的对苯二甲酰基双硫脲化合物Ⅲaf。

In order to find high active pesticide containing heterocycle, six novel terephthaloyl bisthioureas Ⅲ(subscript a-f containing 1,3,4-thiodiazole were synthesized by the reaction of 2-amino-5-alkyl-1,3,4-thiodiazoles with terephthaloyl diisothiocyanate.

为寻找高活性的含杂环农药，由中间体5-烷基－2-氨基－1，3，4-噻二唑与对苯二甲酰基二异硫氰酸酯反应，合成6种新的含1，3，4-噻二唑环的对苯二甲酰基双硫脲化合物Ⅲ。

METHODS: A series of N-octyl-N'-succinyl chitosan labeled with fluorescein, were incubated with HepG2 liver cancer cells, K562 leukemia cells, A549 human lung cancer cells, and BGC cancer cells respectively and followed by using flow cytometry and enzyme-linked immunosorbent assay to assess the affinity and inhibition of N-octyl-N'-succinyl chitosan for the four kinds of tumor cells already mentioned.

用异硫氰酸荧光素对N-正辛基－N'-琥珀酰基壳聚糖进行标记，再分别与人肝癌细胞(HepG2)、人白血病细胞(K562)、人非小细胞肺癌细胞(A549)及人胃癌细胞共培养，通过流式细胞仪及酶联免疫检测仪测定N-正辛基－N'-琥珀酰基壳聚糖对肿瘤细胞的亲和性及抑制力。

As a kind of important intermediates, glycosyl isothiocyanates have been applied in the preparation of new compounds possessing considerable bioactivities.

作为一类重要的有机合成中间体，糖基异硫氰酸酯广泛地应用于具有生理活性化合物的制备。

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。

In the aqueous solution, Cu precipitates with ammonium thiocyanate and tetradecyl benzyl dimethylammonium chloride .

研究发现，在水溶液中Cu与硫氰酸铵、氯化十四烷基二甲基苄基铵形成不溶于水的三元缔合物，在少量氯化钠存在下此三元缔合物沉淀浮于水相上层并与水分成界面清晰的两相，分相过程中Cu被定量浮选。

The authors carried many researches of the feasibility about enriching and separating trace zinc from almost cadmium, and the rate of recoveries of several common metal ions according to this methodo Through repeatedly probed and tried out, at last, a thought as collaborated with traditional methods was established - using diantipyrinylmethane as complex reagent ,with ammonium thiocyanate and zinc forming the triple ionic compound in the medium of hydrochloric acid , extracted by trichloromethane, extracted the organic system by ammonium hydroxide in order to gain zinc .

本文主要研究了从镉基体中富集分离微量锌的可行性，以及采用该方法几种常见金属离子的回收率。通过反复的摸索、试验，最终确立了与传统方法相结合的思路—采用二安替比林甲烷作为络合剂和硫氰酸铵、锌在盐酸介质中形成三元离子缔合物，用三氯甲烷作为萃取剂，最后用氨水作为反萃剂将有机相中的锌洗脱出来与镉分离。

We studied the infection ofthe different reactant ratios to the degree of nitration when the polystyrere was nitrified. Thena series PS-NH_2 With different concentrations of amidocyanogen were gained by reducingPS-NO_2. At last the high active acryloylthiourea were grafted on the amidocyamogens.

在聚苯乙烯的硝化过程中，研究了不同的反应物配比对硝化度的影响，并对不同硝化度的硝基聚苯乙烯进行还原反应，得到了胺基含量不同的系列胺基聚苯乙烯，最后利用聚苯乙烯上的胺基和高活性的丙烯酰基异硫氰酸酯进行加成，合成AGPS。

There are several other little-used counterirritants, such as allyl isothiocyanate, histamine, methyl nicotinate, stronger ammonia water, and turpentine oil.

还有其他一些很少使用的抗刺激剂，如烯丙基异硫氰酸酯，组胺，甲基烟酸，更强的氨水和松节油。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新