查询词典 n-amyl acetate

Iodobenzene, bromobenzene and their derivatives reacted smoothly with n-butyl acrylate or styrene under phosphine-free reaction conditions in the presence of palladium acetate and fluoroquinolones.

碘苯、溴苯和其它芳基卤衍生物与丙烯酸丁酯、苯乙烯等取代乙烯类化合物在钯和氟喹诺酮的催化下发生Heck反应。

A Product main business categories: chemical solvents white oil, toluene, xylene, durene, valitin water, acetate, D resin, acetone, butanone, cyclohexanone , anti-white water, dichloromethane, trichloroethane, trichlorethylene, loose water-saving washing network water, open water, wash water, and days that water, rust agent, to water-logging, washing machine water, decontamination water, n-butyl alcohol, isopropyl alcohol, ethanol, industrial alcohol, car-washing water, washing machine water, clean lines of water, cleaning machine water, fire water, paint remover, fungicides, antifreeze water, chloroform, grinding fluid , diluent, release agent, dehydration agent substantial industrial solvents.

主要经营产品 A类：化工溶剂白电油、甲苯、二甲苯、四甲苯、凡立水、乙脂、丁脂、丙酮、丁酮、环己酮、防白水、二氯甲烷、三氯乙烷、三氯乙烯、松节水、洗网水、开油水、洗面水、天那水、除锈剂、去渍水、洗枪水、去污水、正丁醇、异丙醇、乙醇、工业酒精、洗车水、洗机水、抹线水、抹机水、火水、脱漆剂、杀菌剂、防冻水、哥罗仿、研磨液、稀释剂、脱模剂、脱水剂等大量工业溶剂。

The hypha growth-inhibiting method and the virulence determination method were used to investigate the inhibition effects of the petroleum ether fraction, chloroform fraction, ethyl acetate fraction, n-butanol fraction and water fraction in the alcoholic extracts from the aboveground of Peganum harmala L.

采用抑制菌丝生长法和毒力测定法，研究了骆驼蓬地上部醇提物的石油醚、氯仿、乙酸乙酯、正丁醇和水5个极性部位对南瓜枯萎病菌、西瓜枯萎病菌Fusarium oxysporum f。

Ling Sheng, Guangzhou Chemical Trading Co., Ltd. is a franchise-n-butyl, octyl ester, diethylene glycol, butyl acetate, such as plasticizers, solvents products trading company.

广州市凌升化工贸易有限公司是一家以专营二丁酯、二辛酯、二甘醇、醋酸丁酯等增塑剂、溶剂产品的生产贸易公司。

The insecticidal activities of the ethanol extracts and 5 kinds of extracts with petroleum ether, chloroform, ethyl acetate, n-butanol, aqueous from Rubia cordifolia L. against wolfberry aphis was investigated.

采用点滴法，测定了茜草乙醇提取物和石油醚、氯仿、乙酸乙酯、正丁醇和水5种不同极性萃取物对枸杞蚜虫的触杀活性。

Methods:The CAP residue was extracted from aquatic products which with ethyl acetate and defatted by n-hexane after concentrated.

而在水产养殖中，则曾被广泛应用于水产动物病害的预防和治疗，造成动物性食品中的残留。

The results showed that Kaidimycin was chemically neutral, macrocylic polylactones, stable and liable to dissolve into water and pyridine, slight to dissolve into methanol, ethanol and N-butanol, difficult to dissolve into ethyl acetate, acetone, benzene and chloroform. Chemical reaction of functional group of Kaidimycin showed that it had glycoside, amino acid and aldehyde, no reducing sugar, polypeptide and phenol.

凯地菌素属中等极性的、中性抗生素，极性纸层析结果与多烯类抗生素的纸层析结果相似：易溶于水、吡啶，微溶于甲醇、乙醇、正丁醇，不溶于乙酸乙酯、丙酮、苯、三氯化碳；对高温、光照和紫外处理有很好的稳定性；官能团反应试验结果发现，凯地菌素可能含有糖苷键、氨基酸伯氨基和醛基，不含有还原糖、多肽和酚基，高锰酸钾、浓硫酸反应与多烯大环内酯类抗生素的特性相似；并且依据纯品，采用生物法和分光光度法对摇床发酵液进行了效价的测定。

The herbicides in the sample was extracted with ethyl acetate. The extract was decanted into a flask through a filter paper, then the filtered solution was concentrated to dry. The dry sample was dissolved and added to 5 mL with acetone-n-hexane (30:70, V/V). It was cleaned up by Florisil, concentrated again. The sample was dissolved and adjusted to 1mL with acetone.

匀浆后的草莓试样用乙酸乙酯进行提取，提取液经滤纸过滤后收集，再浓缩蒸干，用丙酮：正己烷(30：70， V/V)溶液溶解至5ml，经Florisil固相萃取柱净化，吹干后用丙酮定容，供气相色谱－质谱联用仪进行测定。

Was extracted with 95% ethanol at first,and then the ethanolic extract was separated with petroleum ether, ethyl acetate, n-Butyl alcohol and methanol in turn to get four fractions from small to large in polarity. The MTT experiment was made for active screening.

方法青天葵部位提取物的制备主要采用溶剂法，青天葵全草先用95%的乙醇提取，得到的提取物进一步用石油醚、醋酸乙酯、正丁醇、甲醇依次提取，得到极性由小到大的4个提取部位。

In this paper, a series of solid base MgO were synthesized via an exotemplating pathway with pine-wood as the template and magnesium acetate as MgO precursor, and were characterized by XRD, SEM, adsorption of n-hexane or nitrogen, Hammett indicator, ICP, JR and TG-DSC techniques.

以松木为模板，乙酸镁为前驱物，通过外模板法制备了一系列的MgO固体碱材料，并用XRD、SEM、正己烷吸附、低温液氮吸附、Hammett指示剂法、ICP、IR和TG-DSC等手段对其进行了表征。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。