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- tetraphenyl pyrazine 四苯基吡嗪
- OBJECTIVE To study the protective effect of tetramethyl pyrazine (TMP) on cyclophosphamide injured mice. 目的:考察川芎嗪对小鼠环磷酰胺损伤的保护作用。
- MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry. 运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。
- However, related data show that besides Maillard reaction, the microbial metabolic pathway, the protein and amino acids healing processes can also produce pyrazine compounds. 但据有关资料表明，除了“美拉德反应途径”外还有“微生物代谢产物途径、蛋白质加热分解途径和氨基酸类的加热分解途径”也可以产生吡嗪类化合物。
- The ether soluble compounds of the reaction product were analyzed by GC/MS.The major iden tified compounds were pyrazine and furan compounds. 该反应产物的醚溶性成分经GC／MS分析显示，其主要成分为吡嗪类和呋喃类化合物。
- The results showed that there existed typical Maillard reaction product including pyrazine, thiazole, sulfur-containing compounds and so on. 结果分析表明，反应液存在典型的美拉德反应产物如吡嗪、噻唑、含硫化合物等。
- The synthetic method of perfume 2 - methyl - 3 - methoxy pyrazine was investigated and better reaction conditions have been found. 利用相转移催化法合成香料2-甲基-3甲氧基吡嗪,并对其反应条件进行探讨,找到较佳的反应条件。
- METHODS To identify the component of prescription,absorption spectrometry and method of tetraphenyl boron sodium to quantitative analysis the active component were used. 方法对处方成分进行定性鉴别,采取紫外分光光度法、四苯硼钠法对有效成分进行定量分析。
- The variety and high content of pyrazine compounds in Maotai-flavor liquor are regarded as the products of Maillard reaction so far. 摘要迄今为止，普遍认为酱香型白酒中种类众多、含量很高的吡嗪类化合物是通过美拉德反应途径产生的。
- An investigation is also made on determining DMDAAC qualitatively by bromophenol blue test and quantitatively by tetraphenyl boron sodium precipitation reac... 用溴酚蓝对DMDAAC进行定性分析，用四苯硼酸钠及折光率法进行定量分析的方法进行了探讨。
- Furthermore, self-assembly of citric acid with Co, Ni, Cu or Zn has been conducted with pyrazine acting as base and/or the second ligand. 在考虑到乙酸根在以上一些合成实例中的重要作用后，我们采用了乙酰丙酮原位分解生成乙酸根的反应，以期螯合稀土金属离子的部分配位点，减小稀土有机多羧酸结构的交联度。
- However, related data show that besides Maillard reaction, the microbial metabolic pathway, the protein and amino acids heating processes can also produce pyrazine compounds. 但据有关资料表明,除了"美拉德反应途径"外还有"微生物代谢产物途径、蛋白质加热分解途径和氨基酸类的加热分解途径"也可以产生吡嗪类化合物。
- In the process of direct fluoration, tetraphenyl phosphonium bromide, potassium fluoride and sulfolane was used as catalyst, fluorating agent, and high boiling point agent respectively. 将对二氯苯用硝硫混酸硝化获得2,5二氯硝基苯,并以氟化钾为氟化剂,在四苯基溴化膦催化下于环丁砜等高沸点溶剂中直接进行氟化,经水蒸气蒸馏和分馏提纯获得产品。
- Six Quaternary Ammonium tetraphenyl borates salt photobase generators were synthesized with the use of p-methoxy phenacylmethylene or 2-naphthoymethylene as chromophore, and triethylene diamine, pyridine or 3-methyl pyridine as tertiary amine. 摘要以对甲氧基苯乙酮、萘乙酮生色团为母体、杂环叔胺三亚乙基二胺，吡啶，3-甲基吡啶和四苯硼盐为原料，合成了6种四苯硼季铵盐光产碱剂。
- Quasiclassical trajectory calculations (QCT) of the energy transfer between highly vibrationally excited pyrazine (C4N2H4) and N2, O2, NH3, and ground state C4N2H4 were performed respectively. 用准经典轨线(QCT)方法计算了高振动激发态吡嗪(C4N2H4)与N2、O2、NH3、基态吡嗪之间的碰撞传能.
- Vanadium complexes with catecholate or pyrazine 2-carboxylate ligands were prepared and characterized by Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy, ultraviolet-visible spectroscopy, and elemental analysis. 制备了含苯磷二酚配体或吡嗪－2-羟酸酯配体的钒配合物，并运用傅里叶变换红外光谱、核磁共振谱、紫外－可见光谱及元素分析对其进行了表征。
- Based on quantum chemistry calculative methods,the geometric structure,stability and frontier molecular orbital of benzene,pyridine,pyridazine,pyrimidine and pyrazine are discussed in this paper. 采用量子化学计算方法讨论了苯及其吡啶、哒嗪、嘧啶、吡嗪5个分子的几何构型、稳定性和前线分子轨道。
- Sesame-flavor liquor has elegant and enjoyable complex aroma which are composed of pyrazine compounds(main body) and furan,phenols,thiazole and sulfur compounds(auxiliary substances). 芝麻香型白酒的芝麻香是以结构不同的吡嗪类化合物为主体,辅以呋喃类、酚类、噻唑、含硫化合物等共同构成的典雅、舒适、芳香、怡人的复合香气。
- Phosphoric acid 1,3-phenylene tetraphenyl ester; 英文别名: Tetraphenyl resorcinol diphosphate;
- Keywords Tetraphenyl porphyin;SERS;Adsorbed state; 四苯基卟吩;SERS;吸附态;
