苯丙烯酸的生物毒性大于对羟基苯甲酸。
Cinnamic acid had more greater action intensity than p-hydroxy benzoic acid.
研究了对甲酚经空气氧化合成对羟基苯甲醛反应过程。
The experimental study on the preparation ofp hydroxybenzaldehyde by p cresol oxidation has been carried out in this work.
对羟基苯甲醛在样品储备、准备和分析过程中稳定性良好。
P-hydroxy benzaldehyde has proved to be stable during all sample storage, preparation and analytical periods.
由对羟基苯甲醛经过硝化、腈化和碘化反应也合成了硝碘酚腈。
Nitroxynil was also prepared from p -hydroxybenzaldehyde by nitration , cyanation and iodination of the product.
将其用于拆分DL-对羟基苯甘氨酸外消旋混合物的电渗析过程。
The membranes were then used in the electrodialysis resolution process to separate DL-4-hydroxyphenylglycine racemic mixture.
本发明DL-对羟基苯甘氨酸纯化技术属医药化工中间体生产领域。
The invention relates to a technology for purifying DL-p-hydroxyphenylglycine, which belongs to the field of the production of pharmaceutical and chemical intermediates.
在纯丙酮和低含水量的混合溶剂中，对羟基苯甘氨酸硫酸盐溶解度很低。
It is found that the solubility of dl-p-HPGS is very small in pure acetone and in the solvent with low water content.
进化酶催化底物海因水解的活性为亲本重组酶的1.3倍，催化底物对羟基苯海因水解的活性为亲本重组酶的2.4倍。
The mutant enzyme showed its activity as 1.3 folds as the original recombinant enzyme with DL-hydantoin as the substrate, whilst as 2.4 times with Dp-hydroxyophenylhydantoin as the substrate.
本论文的第三至第六部分介绍了高效液相色谱手性流动相添加剂法拆分麻黄碱、对羟基苯甘氨酸甲酯、美托洛尔、布洛芬对映体。
In part III to VI, ephedrine, tyrosine methyl ester, metoprolol, ibuprofen enantiomeric separation with chiral additive as mobile phase by high performance liquid chromatography are presented.
以水为溶剂，取代芳磺酸为拆分剂，用诱导结晶法，经成盐、拆分、水解过程，将DL-对羟基苯甘氨酸拆分成D-对羟基苯甘氨酸。
The resolution of DL p hydroxyphenylglycine into its D and L isomers was studied by using aromatic sulfonic acid as resolving agent and water as solvent.
制备了用对硝基苯甲酰氯处理的间氯甲酚或3-羟基-4-氯苯酚，并转化为取代的对硝基苯甲酮。
M-chlorocresol or 3-hydroxy-4-chlorophenol on treatment with p-nitrobenzoyl chloride was prepared and conyerted into substituted p-nitrobezyl ketone.
对铁基复合氧化物催化苯酚羟基化合成苯二酚反应过程酚焦油的生成反应进行了模拟研究。
The simulating study of the formation and inhibition of phenolic tars in the process of diphenols preparation by hydroxylation of phenol with iron-based composite oxides as catalyst was conducted.
对铁基复合氧化物催化苯酚羟基化合成苯二酚反应过程中酚焦油的生成机理进行了研究。
The mechanism for the formation of phenolic tars in the process for the preparation of diphenols by the hydroxylation of phenol using iron-based composite oxides as catalyst was studied.
通过对（-）-表儿茶素的苯甲酰化物的分析，研究了单宁的苯甲酰化位置与次序，从而比较合理地说明了与异氰酸酯反应的羟基的位置。
The position and sequence of benzoylation in tannin were studied by the analysis of benzoylated (-) epicatechin derivatives. The position of hydroxyl groups which react with isocya…
普通水稻品种具有对苯达松抗性是由于苯达松在普通水稻品种细胞中被羟基化，并最终被代谢为对植物无毒性的6 OH 葡萄糖苷苯达松和8 OH 葡萄糖苷苯达松。
In normal rice plants, bentazon resistance is due to bentazon hydroxylation in the plant cells, followed by metabolism to nonphytotoxic glucose conjugates of 6-OH-bentazon and 8-OH-bentazon.
羟基处于醛基邻位和对位的苯甲醛与几种苯乙酮衍生物的缩合，多数没有得到预期的产物，或收率极低；苯乙酮环上的羟基对缩合反应影响很大，羟基越多，缩合越困难。
The groups in ring of benzaldehydes, no matter they are electron withdrowing or electron donating except of hydroxy, do not seem to have much effect on the yield.
采用酶学动力学方法研究2-羟基-4-甲氧基苯甲醛（HMB）对酪氨酸酶的单酚酶和二酚酶活力的抑制效应。
The inhibition effect of 2-hydroxy-4-methoxy-benzaldehyde(HMB)on the activity of monophenolase and diphenolase contained in tyrosinase was studied using enzymological kinetic method.
研究2-乙基-3-羟基-6-苯硫基-4（1H）-吡啶酮（HPP）对羟自由基和超氧阴离子自由基的影响。
The effects of 2-ethyl-3-hydroxy-6-phenylthio-4(1H)-pyridinone (HPP) on hydroxyl radical and superoxide anion radical scavenging activity was studied.
用高荧光染料的5 ，6 ，11，12 四苯基四苯并对8 羟基喹啉铝进行掺杂，测量其光致发光和电致发光谱。
The PL and EL spectra of 5,6,11,12-tetraphenyl-tetracene doped 8-hydroxyquinoline are measured.
用高荧光染料的5 ，6 ，11，12 四苯基四苯并对8 羟基喹啉铝进行掺杂，测量其光致发光和电致发光谱。
The PL and EL spectra of 5,6,11,12-tetraphenyl-tetracene doped 8-hydroxyquinoline are measured.
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