trimethyl相关论文
The relationship between methylated chromans and maturity of organic matter in the source rocks from
The distribution,the relative composition,and their variation of methylated chromans(MTTC) with maturation of organic ma......
THE PAPER CHROMATOGRAPNIC BEHAVIOURS OF SELENIUM, TELLURIUM, COPPER, CADMIUM, BISMUTN, AND NOBLE MET
<正> The paper chromatographic separation of selenium, tellurium, and noble metals with systems containing alcohols or k......
[Objective]To study the chemical constituents of volatile oil from different parts of Embelia parviflora Wall. ex A. DC.......
Influence of Charge Density and Chain Length on the Interaction between Organic Anion and Montmorill
Anionic surfactant sodium dodecyl sulfate (SDS), cationic surfactant cetyl trimethyl ammonium bromide (CTAB) and acrylic......
Photophysical properties of octupolar chromophore based on triazine core and fluorene divinylene con
A novel octupolar chromophore with 1,3,5-triazine as core,2,7-divinylene-9,9-dimethylfluorene as extendedπ-conjugated b......
1,1’‐Butylenebispyridinium hydrogen sulfate is an efficient, halogen‐free and reusable Brnsted ionic liquid catalys......
Molecular iodine was first utilized for direct oxidation of α-isophorone(α-IP) to ketoisophorone(KIP) with molecule ox......
Atomic layer deposition(ALD) technique is used in the preparation of organic/inorganic layers,which requires uniform sur......
目的比较金银花鲜花与烘干品挥发性成分的异同,分析烘干对金银花挥发性成分的影响。方法采用水蒸气蒸馏法提取,运用气相色谱-质谱......
[Objective] To research on the chemical components in volatile oils of Gentiana nubigenan Edgew in Qinghai Province.[Met......
Polysaccharide-based composite materials(beads) containing silver nanoparticles(AgNPs) were successfully prepared.Hydrog......
目的:研究三脉紫菀挥发油的化学组成及相对含量。方法:采用水蒸气蒸馏法提取三脉紫菀叶中的挥发油,并通过气相色谱-质谱(GC-MS)联......
目的:GC-MS定性分析广东省佛山、江门、广州3个地区的木棉花挥发油成分。方法:水蒸气蒸馏法提取木棉花挥发油,GC-MS分离检测挥发油......
Novel Synthesis,Crystal Structure and Herbicidal Activity of(3R,4R)-4,7,7-Trimethyl-6-oxabicyclo[3.2
The title compound,(3R,4R)-4,7,7-trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol(C10H18O3),has been synthesized by using on......
目的:研究和比较费菜根、茎、叶和果实4个部位的脂溶性成分。方法:采用索氏提取法提取费菜根、茎、叶和果实4个部位的脂溶性成分,......
Two new triterpenoid saponins, named ginsenoside Rh10(1) and notoginsenoside ST-6(2), were isolated from notoginseng med......
Synthesis and photoluminescent characteristics of Eu~(3+)-doped MMoO_4(M=Sr,Ba) nanophosphors by a h
The europium ions doped MMoO_4(M=Sr,Ba)nanophosphors were successfully synthesized via a facile hydrothermal method usin......
The title compound 2,5-bis(morpholino)-3,4-bis(p-chlorophenyl) thiophene 2 was obtained by the reaction of -thio-p-chlor......
Within the localized molecular orbital description,the intra- and interorbital pair correlation energies calculated with......
Ion Channel Behavior of a Supported Bilayer Lipid Membrane Composed of 5,5-Ditetradecyl-2-(2-trimeth
A synthetic cationic surfactant, 5, 5-ditetradecyl-2-(2-trimethyl-ammonioethyl)-1, 3-dioxane bromide (DTDB), was used t......
以十六烷基三甲基溴化铵(hexadecyl trimethyl ammonium bromide,CTAB)和曲拉通(Triton,TX-100)混合表面活性剂作为模板剂,在水热......
The vertical ionization energies,excitation energies and oscillator strengths of cytosineand its methyl derivatives wer......
The condensation oligomers of 5-fluorouracil were prepared by reaction of 2,4-bis-(trimethyl-silyloxy)-5-fluoropyrimidi......
2,3,4,6-Tetra-O-benzyl-D-glucopyranose l-a-(p-nitrobenzoate)reacted with aryl ethersin the presence of Lewis acid to gi......
Photochemistry of heterocycles——VIII. photocycloaddition of acetylenic compounds to 1,3-dimethyl-6-a
The photocycloadditions of 1,3-dimethyl-6-azathymine to 2-butyne-1,4-diol and 1,4-di-methoxyl-2-butyne have been studie......
Perfluoroalkanesulfonyl bromides reacted with vinyl bromide,vinyl acetate and trimethylvinyl silane to give the corresp......
本文报道了用毛细管气相色谱—质谱法分析一种塑料机壳漆用溶剂和稀料的成分,给出绝大部分化合物的成分鉴定,并将主要成分的含量进......
维生素E又名生育酚,有α、β、γ及δ四种。本文所指的维生素E是α-生育酚即为2,5,7,8-tetramethyl-2-(4’,8’,12’-trimethyl-t......
Study on Volatile Oil Components and Total Anti-oxidation Capacity and Simulated SOD Activity of Lea
The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solven......
Two new monoprotonated products of macrocyclic polyamine 1,4,7 trimethyl 1,4,7 triazacyclononane(Me 3〔9〕ane......
An interfacial equation of state based on perturbation theory for surfactant-oil-water system has beendeveloped.By combi......
The spin labeled 4(-Epi-N-trifuoroacetyldaunomycin derivatives 6-7 were conveniently synthesized from daunomycin in midd......
The title compound 2,5-dimorpholinyl-3,4-di(p-chlorophenyl)thiophene (C24H24Cl2N2O2S, Mr=475.41) was obtained by the rea......
The research progress in trialkyl compounds of gallium and indium was discussed from two aspects, one was the chemical s......
A new acyclic sesquiterpene oligoglycoside, named mukurozioside A, was isolated from pericarps of Sapindus mukurossi. O......
A simplified procedure for enantioselective synthesis of (S)-(+)-2-(6-methoxyl-2- naphthyl) propionic acid ((S)-(+)-napr......
Preliminary Exploration of the Reactor Configuration for Hydroformylation of 1-Dodecene Catalyzed by
Hydroformylation of 1-dodecene was studied in a biphasic system using water-soluble rhodium complex [RhCl(CO)(TPPTS)2] a......
Syntheses,characterization,crystal structure and magnetic properties of copper(Ⅱ) α,β-unsaturated ca
Two ternary complexes Cu2A4[OP(OCH3)3]2 (A represents CH2=CH-COO- and CH2=C(CH3)-COO-) have been synthesized, and elemen......
Two new ionone derivatives, rhododendrone A and rhododendronside, have been isolated from the alcoholic extract of the a......
The nanostrutured mesoporous silica materials MCM-41 with different pore sizes were synthesized by adding 1,3,5-trimethy......
Calcium montmorillonite from Liao-ning was organically intercalated by using cety1 trimethy1 ammonium bromide after it w......
波士顿布里格姆妇女医院的临床核医学主任兼哈佛医学院放射学教授B Leonard Holman在谈到恢复使用单光子发射计算机体层摄影(SPEC......
Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate w......
Erlanger及其同事在研究重症肌无力(myasthenia gravis,MG)的过程中,偶然地发现一种能与乙酰胆硷受体(acetylcholine receptor Ac......
对姜的不同炮制品的醚提液进行了气相-质谱-计算机检测。从生姜、干姜、炮姜、姜炭中各检出25、22、23、23个组分。并对它们各组分......
长梗南五味子(紫金皮)为木兰科植物(Kadsura longipedunculata Finet et Gagn)的根皮,有行气、活血等功效。作者曾对其根的挥发油......
采用水蒸汽蒸馏法,提取三种广西产生姜的精油,并进行了分析比较。通过GC/MS/DS技术对姜的精油进行定性、定量分析,检出53个成分,鉴......
用气相色谱-质谱-计算机联用技术研究了中国引种的日本榧叶挥发油的化学成分,共分离出71个组分,鉴定了68个成分。所鉴定成分占挥发......
