Preparation of catalyst for low pressure hydrogenation of heptaldehyde;
庚醛低压催化加氢催化剂的制备
α-Hydroxyl octanoic acid(1) was synthesized from heptaldehyde by a four-step reaction of nucleophilic substitution,displacement reaction,acid hydrolysis and deaminization.
以正庚醛为原料,经过亲核取代、置换反应、酸水解及碱化脱氨等4步反应合成了制备3,6-二己基-1,4-二氧杂-2,5-二酮(辛交酯)的中间体——α-羟基辛酸(1);1经对甲苯磺酸催化脱水得辛交酯。
Aim\ Enanthal diethyl acetal is prepared with heptaldehyde and triethyl orthoformate as raw materials.
目的 研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件 。
But, when heptanal was added in different concentrations of 1×10 -5-5×10 -5(V/V) to the mixture of green-leaf volatile compounds, the respondence of the antenna of mated female of cotton bollworm to .
在单组分或多组分的测定中 ,棉铃虫处女蛾和交配蛾在P =0 0 5水平上并不存在显著性差异 ,但在混合的绿叶气味物质中加入含量为 1×10 - 5～ 5× 10 - 5(体积比 )的正庚醛时 ,交配蛾对混合物的触角电位反应显著高于处女蛾的反应 (P <0 0 5
Heptaldehyde and 10-Undecylenic Acid from The Pyrolyzed Castor Oil
蓖麻油裂解制备庚醛和10－＋－烯酸
Standard heptane
GB/T497-1977标准正庚烷
diaminopimelate pathway
二氨基庚二酸盐途径
diaminopimelic acid pathway
二氨基庚二酸 途径
On China and America s Boxer Indemnities to Sponsor Education;
中美庚款兴学论析（1904-1929）
The social stratum of late Shang dynasty and the reason for Pangeng moved the capital to yin according to the texts of "Pangeng;
从《盘庚》看商晚期社会各阶层及盘庚迁都原因
formaldehyde solutions(formalin)
甲醛溶液(甲醛水)
Studies on Synthesis of Phosphonodipeptide Derivatives of exo-Bicyclo[2.2.1]heptane(or hept-5-ene)-2, 3-dicarboxylic Anhydride
外式双环[2.2.1]庚烷(庚-5-烯)-2,3-二甲酸酐膦二肽衍生物的合成
Sending Students to America by Utilizing the Boxer Indemnity Refund:Historical Investigations on the Plan Initiated by Liang Cheng
庚款留美发端考——梁诚首倡庚款留美计划的历史考察
Inheriting Historic Context,Developing Jiageng Style:Appreciation of Building Complex with Jiageng Style in Xiamen University;
传历史文脉 承嘉庚风格——厦门大学嘉庚风格建筑楼群赏析
On the Style of Medium Tang and Tang of Night of Lin Geng s Verse of the 30 s--Compare with "the Prosperous Tang s Style" of the Lin Geng s Verse Theories Mutually at the Same Time;
论30年代林庚诗作的中晚唐风调——兼与林庚诗论的“盛唐气象”比较
citronellal cycloglycol acetal
香茅醛环乙二醇缩醛
formaldehyde scavenger
甲醛捕集剂,甲醛清除剂
azatadine maleate
(抗组胺药) 马来酸哌吡庚啶
D-glucoheptonic acid and its salts and esters
D-葡庚糖酸及其盐类和酯类
Obviously, Hua Luogeng benefited from it a lot when he was a junior school student.
华罗庚还是初中生时就从中受益匪浅。
The planet Venus in its appearance as the evening star.
昏星，长庚星傍晚时出现的行星金星
Among the more common acids are the butanoic acids, the pentanoic acids, the heptanoic acids and the octanoic acids.
丁酸、戊酸、庚酸和辛酸是更为常用的酸。