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- methyl phenylethyl hydantoin 麦山妥英
- phenylethyl hydantoin [化] 5,5-苯基乙基乙内酰脲
- Manufacture of Phenyl and Phenylethyl Malonic Esters. 苯基和苯基乙基丙二酸酯的生产。
- The increaseing of hydrophilicity of insoluble hydantoin bactericide made t... 水不溶性海因类杀菌剂亲水性的增加,使杀菌率从869%25提高到971%25。
- INGREDIENTS:Mulberry Bark Licorice Root Arctostaphylos Uva Ursi Buchu Lemon DMDM Hydantoin. 新鲜药草萃取:桑树皮萃取液、甘草根萃取液、熊果叶天然萃取液、灌木萃取液、柠檬萃取液.
- The process of cyanide-free silver pulse electroplating is investigated in 5, 5-dimethyl hydantoin (DMH) bath. 研究了5,5-二甲基乙内酰脲(DMH)无氰脉冲镀银工艺。
- A cyanide-free silver electroplating process with 5,5-dimethyl hydantoin as coordination agent is studied. 研究了5,5-二甲基乙内酰脲为配位剂的无氰镀银工艺。
- The efficiency of DBDMH production is 90%with an optimum mol ratio of 1:2:2 of hydantoin: Br2: NaOH. 在适宜的反应物配比条件下即海因、溴、氢氧化钠的摩尔比为1:2:2;生成产物二溴海因的产率为90%25.
- The affects of catalyst amount, molar ratio of phenylethyl alcohol and iso-valeric acid, reaction time and dehydrating agent amount were studied. 研究了催化剂用量、载体二甲苯用量、醇酸比例以及反应时间对反应结果的影响。
- And other products such as Hydantoin, Zinc glycinate, Sodium glycinate, Sodium glycine Carbonate, etc. 我司还有其他产品,例如海因,甘氨酸锌,甘氨酸钠,甘氨酸钠碳酸盐等等。
- Synthesis methods for natural anticancer drug caffeic acid phenylethyl ester were reviewed and their advantages and disadvantages were described with 55 references. 介绍了天然抗癌药咖啡酸苯乙醇酯的各种化学合成方法,并评价了其优缺点。参攷文献55篇。
- As so far, there is just a little of literature of L252 monosubstituted hydantoin, and the details of the racemization of hydantoin are not revealed. 目前关于52单取代海因的消旋的文献非常少,海因消旋的细节问题也没有被完全揭示。
- Abstract: Using sulfamie acid as catalyst, synthesis of benzyl acetate and phenylethyl acetate through esterification were studied. The yields are good with high purity. 文摘:研究了氨基磺酸催化酯化合成乙酸苄酯和乙酸苯乙酯。此工艺反应时间短、能耗低、产品纯度高、产率良好、无三废污染,优于文献方法。
- The increaseing of hydrophilicity of insoluble hydantoin bactericide made the bactericidal rate increase from 86.9%to 97.1%. 水不溶性海因类杀菌剂亲水性的增加,使杀菌率从86.;9%25提高到97
- The results showed that the relative contents of fusel oil were decreased;the relative contents of total ester, total acid and phenylethyl alcohol increased after PEF treatment. 研究结果表明:经一定条件的高压脉冲电场处理后,葡萄酒中的杂醇油含量有所下降,总酸、总酯和苯乙醇的含量有所上升。
- Hydantoin was synthesized from glycine and sodium cyanate, which was condensed with benzaldehyde to give monohydrated sodium phenylpyruvate in 67. 由甘氨酸和氰酸钠反应合成海因;然后与苯甲醛缩合;经碱水解得到一水合苯丙酮酸钠;总收率为67.;0%25。
- Using sulfamic acid as catalyst, synthesis of benzyl acetate and phenylethyl acetate through esterification were studied. The yields are good with high purity. 研究了氨基磺酸催化酯化合成乙酸苄酯和乙酸苯乙酯。此工艺反应时间短、能耗低、产品纯度高、产率良好、无三废污染,优于文献方法。
- Therefore, the auto racemization of L252 monosubstituted hydantoin is an important step of the production of L2 or D2N2 carbamoylase. 因此,52单取代海因的自发消旋成为L2或D2N2氨甲酰氨基酸生产中的一个重要的步骤。
- Using sulfamie acid as catalyst, synthesis of benzyl acetate and phenylethyl acetate through esterification were studied. The yields are good with high purity. 研究了氨基磺酸催化酯化合成乙酸苄酯和乙酸苯乙酯。此工艺反应时间短、能耗低、产品纯度高、产率良好、无三废污染,优于文献方法。
- A simple and rapid method for the spectrophotometric determination of hydantoin with chromotropic acid has been reported. 本文建立了简单、迅速地利用变色酸光度测定海因的方法。