Influence of eelc on vasoactive fractions of gastric mucous coat in rats with gastric ulcer 蓝靛果乙酸乙酯提取物对胃溃疡大鼠胃黏膜血管活性物质的影响
Use as solvent : synthetic resin , pesticide , polyhydric alcohol , marking ink , coatings and iodine 注:溶于水甲醇乙酸乙酯乙醇二氯甲烷烃碳氢化合物。
By using ethyl acetate and water as extractant , oligoprocyanidins were extracted from grape seeds 介绍了用乙酸乙酯/水作溶剂从葡萄籽中提取低聚原花色素的方法。
Results the antioxdant components were found in the ethyl acetate extract from stem of this plant 结果从该植物茎乙酸乙酯的分离物中找到具有抗氧化活性的组分。
The product is a off - white crystallized particle . it is insolvable in water , and soluble in alcohol , ethyl acetate or benzene 本产品为类白色固体,产品不溶于水,可以溶于酒精、乙酸乙酯或苯。
Results : the ftir spectrums of the different extracted parts of chrysanthemum had their obvious ir characters 结果:不同提取部位(挥发油部位、乙酸乙酯部位、水部位)药用菊花红外谱图的特征明显。
The optimum condition for synthesis of ethyl acetate catalyzed by expansible graphite was investigated through orthogonal test 摘要通过正交实验研究了可膨胀石墨的催化合成乙酸乙酯的最佳条件。
Methods the title compound was synthesized via 2 steps starting from phenylboronic acid and ethyl p - bromophenyalacetate 方法以苯硼酸和对溴苯乙酸乙酯为起始原料,经偶联、皂化二步反应得目标化合物。
Abstract : the resulted ir spectrum makes it possible to determine the reaction mechanism of ethyl acetoacetate with tetra butyl titanate 文摘:得到的红外光谱使其决定钛酸四丁酯与乙酰乙酸乙酯的反应历程。
The catalytic mechanism of expansible graphite in esterification and the causes behind the lower esterification were discussed 推断了可膨胀石墨在乙酸乙酯合成中的催化作用机理,分析了可膨胀石墨催化乙酸乙酯合成产率偏低的原因。