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乙酯

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His team also examined phenethyl isothiocyanate, a constituent of cruciferous vegetables such as broccoli, on ovarian cancer cells.

斯里瓦斯塔瓦的研究小组还检测分析了存在于花椰菜等十字花科蔬菜中的异硫氰酸苯乙酯对卵巢癌细胞产生的作用。

Methods Cyclohexane, ethyl acetate and glacial acetic acid (8∶8∶0.8) were used as the developing solvent. Samples were analyzed on a layer plate of silica gel G thin by using 20% phosphomolybdic acid as chromogenic agent.

以环己烷乙酸乙酯冰醋酸(体积比8∶8∶0.8)为展开剂,以羧甲基纤维素钠为黏合剂自制硅胶G薄层板,20%磷钼酸溶液为显色剂,进行薄层色谱分析。

This paper reports the study for phosphomolybdic acid H 3[P(Mo 3O 10 4]·xH 2O as catalyst and anhydrous magnesium sulfate as drying agent used in the esterification of hexanoic acid and ethyl alcohol.

报道了以磷钼酸为催化剂,以无水硫酸镁为吸水剂,催化脱水合成己酸乙酯

The catalyst was characterized by XRD,no apparent characteristic peaks of phosphotungstic acid are observed,which indicates that heteropoly acid dispersed finely in the molecular sieves,and the structure of ZSM-5 was not destroyed.

将催化剂用于合成乙酸乙酯,探讨了操作条件包括原料组成,催化剂用量和反应时间对酸转化率的影响并与浸渍方法得到的催化剂进行重复使用性能比较。

Triphosgene ; carbamic acid ethyl ester ; phthalimide

三光气;胺基甲酸乙酯;邻苯二甲酰亚胺

The effects of the extracts from Brucea javanica using chloroform and ether acetate on the activity of protease and the protein contents of Pieris rapae were studied.

鸦胆子氯仿和乙酸乙酯提取物对菜青虫幼虫蛋白酶的活性和蛋白质含量均有明显影响。

The wall-broken Cole bee pollen lOOg is extracted by 1:10 of anhydrous ethanol , continuously stirred in darkness for two hours. And then by means of centrifuge, cleaning, vacuum concentration, adjusting pH value, anion exchange resin chromatography, propanone extraction,being blown to dry and freeze-dried, we use HPLC to detect the content of the GA derivative of the freeze-dried powder.

将破壁油菜蜂花粉100g,在避光条件下用无水乙醇(料液比1:10)连续搅拌浸提2小时,浸提液经离心、洗涤、真空浓缩、pH值调节、阴阳离子树脂交换、乙酸乙酯萃取、吹干再冻干后用HPLC法分析,得冻干样品中赤霉素衍生物的含量为51.29%。

Selecting acrylic acid、acrylamide and 2 propenoic acid 2 hydroxyethyl ester as the monomers of copolymerization,a water absorbent resin used for condensing protein solution has been synthesized by means of water solution polymerization.

以丙烯酸、丙烯酰胺及丙烯酸羟乙酯等为单体合成了浓缩蛋白质溶液用吸水树脂,其最大浓缩倍率可达 4。

An improved procedure for the lithiation of ethyl propiolate is also reported.

改良程序的锂酸乙酯DBN也是报道。

The total selectivity of propionic acid and propionate is 85.51%,and ethanol conversion is 95.30%.

在试验条件下Ni-Cu/C催化剂对乙醇转化率为95.3%,丙酸+丙酸乙酯的选择性为85.51%。

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