cresol/hymenoxys rusbyi

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Acceleration of the N alpha-deprotection rate by the addition of m-cresol to diluted methanesulfonic acid and its application to the Z(OMe)-based solid-phase syntheses of human pancreastatin-29 and magainin 1.

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In solid-phase peptide synthesis, the addition of m-cresol to diluted methanesulfonic acid (MSA) in dichloromethane accelerated the deprotection rate of the acid-labile alpha-amino protecting group, the p-methoxybenzyloxycarbonyl (Z(OMe)) group. Further, 0.1 M MSA, 20% m-cresol/CH2Cl2 was found to

Determination of phenol and o-cresol by GC/MS in a fatal poisoning case.

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A fatality due to the ingestion of solution containing phenol and o-cresol is described. The pathological findings were typical of acute substantial poisoning. Blood, urine and stomach content were obtained during post mortem examinations. Phenol and o-cresol were identified using GC/MS. The

Determination of chlorinated phenols and cresols in human urine using solid-phase extraction and gas chromatography.

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A method is described for the isolation, derivatization, separation and determination of chlorinated phenols and cresols in urine. After acid hydrolysis, solid-phase extraction on Separcol SI C18 was used. Quantification was based on the internal standard method using 2,6-dibromophenol. Before GC

Urinary o-cresol in toluene exposure.

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The determination of urinary o-cresol in varying exposure to toluene vapor showed a linear relationship between the metabolite and the inhaled solvent. The analytical method involves acid hydrolysis of 20 ml of urine with subsequent extraction of the phenolic compounds in dichloromethane, followed

Simple off-line flash pyrolysis procedure with in situ silylation for the analysis of hydroxybenzenes in humic acids and coals.

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A simple device consisting of a glass pyrolysis chamber fitted for a commercial resistively heated pyrolysis probe and connected to a solvent desorption tube for air monitoring was applied to off-line pyrolysis under silylating conditions of humic acids (soil, lake) and coals. Samples were flash

Dendronized polyimides bearing long-chain alkyl groups and their application for vertically aligned nematic liquid crystal displays.

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Polyimides having dendritic side chains were investigated. The terphenylene diamine monomer having a first-generation monodendron, 3,4,5-tris(n-dodecyloxy)-benzoate and the monomer having a second-generation monodendron, 3,4,5-tris[-3',4',5'-tri(n-dodecyloxy)benzyloxy]benzoate were successfully

Synthesis of amine-bridged bis(phenolate) rare-earth metal aryloxides and their catalytic performances for the ring-opening polymerization of l-lactic acid O-carboxyanhydride and l-lactide.

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A series of rare-earth metal complexes stabilized by different amine bridged bis(phenolate) ligands were synthesized and well characterized. Their catalytic performances for the ring-opening polymerization of l-lactic acid O-carboxyanhydride (l-lacOCA) and l-lactide were explored. Sequential

[Organic Distribution Characteristics and Influence on Drinking Water Quality in the Typical Water Sources for Towns in the Southwest Hilly Area of China].

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This study analyzed the organic distribution characteristics of original and treated water and their impacts on drinking water quality using a conventional water treatment process in the typical water supply sources for towns in the southwest hilly area of China. The results showed that the water

Development of enantioselective synthetic routes to (-)-kinamycin F and (-)-lomaiviticin aglycon.

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The development of enantioselective synthetic routes to (-)-kinamycin F (9) and (-)-lomaiviticin aglycon (6) are described. The diazotetrahydrobenzo[b]fluorene (diazofluorene) functional group of the targets was prepared by fluoride-mediated coupling of a β-trimethylsilylmethyl-α,β-unsaturated

Chemical Composition of Pyroligneous Acid Obtained from Eucalyptus GG100 Clone.

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The present study aimed to characterize the chemical composition of pyroligneous acid (PA) obtained from slow pyrolysis of the clone GG100 of Eucalyptus urophylla × Eucalyptus grandis. The efficiency of extraction of organic compounds by using different solvents-dichloromethane (DCM), diethyl ether

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Herbal & Natural Medicine

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