查询词典 ethyl

Base played a crucial role in this reaction: in the Pd2/L1 catalyzed α-arylation of ethy malonate, K3PO4 is the base of choice; in the α-arylation of ethyl acetoacetate, K2CO3 is the most effectiv base.

在这类催化反应中，碱的选择具有重要的影响：以K3PO4为碱，Pd2/L1催化体系在丙二酸二乙酯的α-芳基化中，富电子溴代芳烃显示较好的活性；Pd2/L1催化的乙酰乙酸乙酯α-芳基化时，以K2CO3为碱，催化体系显示较好的活性，这个催化体系可控制反应得到α-芳基乙酰乙酸乙酯，而不是脱乙酰基的产物。

Vitamin A is added in the AD calcium salt in the form of ethyl ester,which is insoluble in water.

AD 钙盐中的维生素A是以其乙酸酯的形态加入，而后者不溶于水。

A novel method for synthesis of-4-cyano-3-hydroxybutyric acid ethyl ester (1), a key intermediate of statins, was reported.

研究了一条新的路线用于他汀类药物的重要中间体-4-氰基-3-羟基丁酸乙酯的合成。

Objective:A method for determination of the TTNPB ethyl ester and its metabolite in plasma was developed.

药物分析杂志000212摘要目的：TTNPB酸乙酯及其代谢物TTNPB同属维甲酸类药物，是治疗银屑病的有效药物。

Due to its high solubility property, safe production process and environment friendly characteristics, the ethyl ester of soybean oil would be applied in printing ink manufacture.

其优异的溶解性能，安全的生产工艺和环保特性，表明大豆油脂肪酸乙酯在油墨中的应用潜力。

Objective: To synthesize 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, the key intermediate in the synthesis of fluorouracil derivatives.

目的：合成氟尿嘧啶类衍生物合成中的关键中间体2-苄氧基－5-氟－4-嘧啶酮－3-丁酸乙酯。

CP 56, an ethyl ester of CPF 48 was found as a derivative in ethanol.

CP 56为乙基酯，为酯化反应之衍生物。

In this study,urea inclusion method and molecular distillation method were applied in the purifications of ethyl ester of EPA and DHA.

用尿素沉淀法和分子蒸馏法研究了二十碳五烯酸、二十二碳六烯酸乙酯的分离提纯。

One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, and the other one is its formula isomer.

通过IR谱确证一个化合物是目标物2-苄氧基－5-氟－4-嘧啶酮－3-丁酸乙酯，另一化合物是它的同分异构体。

Any of several esters, other than the ethyl ester, of carbamic acid .

化学术语甘氨酸铁铁的甘氨酸络合物。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。