查询词典 methyl-glyoxal
- 与 methyl-glyoxal 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Whenpyridine was used as reductive decomposing agent, the expecting cholest-4-en-3,6-dione-22-al was obtained. However, when Zn/HOAc was used to decomposethe ozonide, C-4,5 double bond was further reduced to give cholest-3,6-dione-22-al as main product. 2 For the side-chain construction of compound (1), the solid-liquid phase-transfer Wittig reaction was used. When (3-methyl-2-oxobutyl)-triphenylarsonium bromide was used as reagent, the reaction can be carried out inmild reaction condition and the yield is higher than that when phosphorane wasused.
但使用Zn/HOAc作为分解剂时,却得到其氢化产物胆甾-3, 6-二酮-22-醛;2在甾体支链引入过程中,采用固-液相转移Wittig反应的方法,用(3-甲基)-2-氧丁基三苯基溴化胂作为试剂,反应在非常温和的条件下便可完成,而且产率比传统采用膦烷的方法更高;3在对某些甾酮化合物的选择性还原反应研究时,发现在〓还原体系中,当加入某些金属离子后,反应有更好的区域选择性和立体选择性。
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With methyl palmitate separated from Chinese vegetable tallow and VC as raw materials, AP was synthsied in this study.
L-抗坏血酸棕榈酸酯是具有功能性、营养性、无毒、高效的抗氧化剂,应用范围广泛。
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Objective To investigate the effect and possible mechanisms of methyl parathion on testis cell cycle and cell apoptosis in male rats.
目的 研究甲基对硫磷对雄性大鼠的睾丸毒性作用,探讨其毒理作用机制。
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The residues of methyl parathion had not been detected in seven days when it was used.
实验结果表明,甲基对硫磷在小白菜上半衰期为2.91天;喷药后第七天,在小白菜中未检出甲基对硫磷的残留。
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A method was developed for simultaneous determination of methyl- parathion and parathion residues in vegetables by reversed-phase high performance liquid chromatography.
建立了同时测定甲基对硫磷、对硫磷在蔬菜中残留量的反相高效液相色谱分析方法。
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The results showed that the half of decay time of methyl parathion in Chinese cabbage was 2.91 days.
喷药后,在第零天、第一天、第二天、第三天、第五天、第七天分别取样,用气相色谱法分析测定甲基对硫磷在小白菜上的残留量,得出甲基对硫磷残留量与时间的关系。
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The conclusion can be drawn that Chinese cabbage applied methyl parathion can not be consumed in seven days.
建议小白莱施用甲基对硫磷后,至少在第七天后再采摘食用。
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After 4 generations treatment with tannic acid, the larvae of cotton bollworms were more susceptible to deltamethrin, but had no significant difference in susceptibility to parathion methyl.
单宁酸处理的第4代幼虫对溴氰菊酯的敏感度有增加的趋势,对甲基对硫磷的敏感度没有明显改变。
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The optimum pH value for enzymatic hydrolysis of methyl parathion was 8. 6~8. 8, the optimum temperature was 15℃.
甲基对硫磷水解酶水解甲基对硫磷的最适pH均为8.6~8.8,最佳反应温度为15℃。
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Methyle β cyclodextrin was simply synthesized, and the impacts on the solubilization of methyl parathion and carbofuran were investigated.
摘 要:研究了甲基化β环糊精的一种简单制备方法及其对甲基对硫磷和呋喃丹的增溶作用。
- 推荐网络例句
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My first article for Screen Power Magazine, which is to this day is the official magazine of Jackie Chan, was a DVD review of the Hong Kong actioner Gen-X Cops, starring Nicholas Tse and Daniel Wu.
我的第一篇文章为屏幕力量杂志,在对这天是Jackie Chan 正式杂志,是香港actioner Gen X 警察的DVD 回顾,担任主角Nicholas Tse 和丹尼尔吴。
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His lips grazed hirs, Now what are you going to do?
他的唇使吃草了 hirs,现在你将要做什麼?
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I wasn't a huge drinker, but I enjoy it socially.
我不是一个贪杯的人,但在社交场合我会略微享受一点。