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EtherEthersEthyl EthersHalogenated Diphenyl EthersPhenyl EthersCrown EthersPhospholipid EthersGlyceryl EthersMethyl EthersEthylene GlycolsPolybrominated BiphenylsFlame RetardantsBis(Chloromethyl) EtherEthers, CyclicPlasmalogenstert-Butyl AlcoholVinyl CompoundsHydrocarbons, BrominatedMolecular StructureStereoisomerismAcetalsChromatography, GasCyclizationGas Chromatography-Mass SpectrometryGasolineAlkenesChromatography, Thin LayerBoranesSolventsEnvironmental PollutantsGlyceridesGlycolsMethoxyfluraneEstersEpoxy CompoundsAlcoholsFuransPropaneFatty AlcoholsMagnetic Resonance SpectroscopyPyran CopolymerSilanesDihematoporphyrin EtherBiodegradation, EnvironmentalAlkanesChloroformKetonesOximesPropylene GlycolsGuaifenesinButanesChemistryMass SpectrometryPlant ExtractsCissusChondrodysplasia Punctata, RhizomelicChemical PhenomenaHydrocarbons, HalogenatedPhospholipidsAnestheticsCatalysisEgtazic AcidSurface-Active AgentsStructure-Activity RelationshipBromineAcetatesPolyethylene GlycolsKineticsTeratogensAllyl CompoundsAgrocybeCyclopropanesAldehydesAlkynesPolychlorinated BiphenylsChromatography, High Pressure LiquidHematoporphyrinsPhosphinesPhenolsOrganosilicon CompoundsIndicators and ReagentsLipidsMethanol
Ether: A mobile, very volatile, highly flammable liquid used as an inhalation anesthetic and as a solvent for waxes, fats, oils, perfumes, alkaloids, and gums. It is mildly irritating to skin and mucous membranes.EthersEthyl EthersHalogenated Diphenyl Ethers: Compounds that contain two halogenated benzene rings linked via an OXYGEN atom. Many polybrominated diphenyl ethers are used as FLAME RETARDANTS.Phenyl Ethers: Ethers that are linked to a benzene ring structure.Crown Ethers: Macrocyclic polyethers with the repeating unit of (-CH2-CH2-O)n where n is greater than 2 and some oxygens may be replaced by nitrogen, sulfur or phosphorus. These compounds are useful for coordinating CATIONS. The nomenclature uses a prefix to indicate the size of the ring and a suffix for the number of heteroatoms.Phospholipid Ethers: Phospholipids which have an alcohol moiety in ethereal linkage with a saturated or unsaturated aliphatic alcohol. They are usually derivatives of phosphoglycerols or phosphatidates. The other two alcohol groups of the glycerol backbone are usually in ester linkage. These compounds are widely distributed in animal tissues.Glyceryl Ethers: Compounds in which one or more of the three hydroxyl groups of glycerol are in ethereal linkage with a saturated or unsaturated aliphatic alcohol; one or two of the hydroxyl groups of glycerol may be esterified. These compounds have been found in various animal tissue.Methyl Ethers: A group of compounds that contain the general formula R-OCH3.Ethylene Glycols: An ethylene compound with two hydroxy groups (-OH) located on adjacent carbons. They are viscous and colorless liquids. Some are used as anesthetics or hypnotics. However, the class is best known for their use as a coolant or antifreeze.Polybrominated Biphenyls: Biphenyl compounds which are extensively brominated. Many of these compounds are toxic environmental pollutants.Flame Retardants: Materials applied to fabrics, bedding, furniture, plastics, etc. to retard their burning; many may leach out and cause allergies or other harm.Bis(Chloromethyl) Ether: A substance that is an irritant to the eyes and respiratory tract and may be carcinogenic.Ethers, Cyclic: Compounds of the general formula R-O-R arranged in a ring or crown formation.Plasmalogens: GLYCEROPHOSPHOLIPIDS in which one of the two acyl chains is attached to glycerol with an ether alkenyl linkage instead of an ester as with the other glycerophospholipids.tert-Butyl AlcoholVinyl CompoundsHydrocarbons, BrominatedMolecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Stereoisomerism: The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)AcetalsChromatography, Gas: Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.Cyclization: Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Gas Chromatography-Mass Spectrometry: A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.Gasoline: Volative flammable fuel (liquid hydrocarbons) derived from crude petroleum by processes such as distillation reforming, polymerization, etc.Alkenes: Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)Chromatography, Thin Layer: Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Boranes: The collective name for the boron hydrides, which are analogous to the alkanes and silanes. Numerous boranes are known. Some have high calorific values and are used in high-energy fuels. (From Grant & Hackh's Chemical Dictionary, 5th ed)Solvents: Liquids that dissolve other substances (solutes), generally solids, without any change in chemical composition, as, water containing sugar. (Grant & Hackh's Chemical Dictionary, 5th ed)Environmental Pollutants: Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.Glycerides: GLYCEROL esterified with FATTY ACIDS.Glycols: A generic grouping for dihydric alcohols with the hydroxy groups (-OH) located on different carbon atoms. They are viscous liquids with high boiling points for their molecular weights.Methoxyflurane: An inhalation anesthetic. Currently, methoxyflurane is rarely used for surgical, obstetric, or dental anesthesia. If so employed, it should be administered with NITROUS OXIDE to achieve a relatively light level of anesthesia, and a neuromuscular blocking agent given concurrently to obtain the desired degree of muscular relaxation. (From AMA Drug Evaluations Annual, 1994, p180)EstersEpoxy Compounds: Organic compounds that include a cyclic ether with three ring atoms in their structure. They are commonly used as precursors for POLYMERS such as EPOXY RESINS.Alcohols: Alkyl compounds containing a hydroxyl group. They are classified according to relation of the carbon atom: primary alcohols, R-CH2OH; secondary alcohols, R2-CHOH; tertiary alcohols, R3-COH. (From Grant & Hackh's Chemical Dictionary, 5th ed)Furans: Compounds with a 5-membered ring of four carbons and an oxygen. They are aromatic heterocycles. The reduced form is tetrahydrofuran.PropaneFatty Alcohols: Usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4 carbons, derived from natural fats and oils, including lauryl, stearyl, oleyl, and linoleyl alcohols. They are used in pharmaceuticals, cosmetics, detergents, plastics, and lube oils and in textile manufacture. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Magnetic Resonance Spectroscopy: Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).Pyran Copolymer: Copolymer of divinyl ether and maleic anhydride that acts as an immunostimulant with antineoplastic and anti-infective properties. It is used in combination with other antineoplastic agents.Silanes: Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.Dihematoporphyrin Ether: The purified component of HEMATOPORPHYRIN DERIVATIVE, it consists of a mixture of oligomeric porphyrins. It is used in photodynamic therapy (HEMATOPORPHYRIN PHOTORADIATION); to treat malignant lesions with visible light and experimentally as an antiviral agent. It is the first drug to be approved in the use of PHOTODYNAMIC THERAPY in the United States.Biodegradation, Environmental: Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.Alkanes: The generic name for the group of aliphatic hydrocarbons Cn-H2n+2. They are denoted by the suffix -ane. (Grant & Hackh's Chemical Dictionary, 5th ed)Chloroform: A commonly used laboratory solvent. It was previously used as an anesthetic, but was banned from use in the U.S. due to its suspected carcinogenicity.KetonesOximes: Compounds that contain the radical R2C=N.OH derived from condensation of ALDEHYDES or KETONES with HYDROXYLAMINE. Members of this group are CHOLINESTERASE REACTIVATORS.Propylene Glycols: Derivatives of propylene glycol (1,2-propanediol). They are used as humectants and solvents in pharmaceutical preparations.Guaifenesin: An expectorant that also has some muscle relaxing action. It is used in many cough preparations.ButanesChemistry: A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.Mass Spectrometry: An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.Plant Extracts: Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.Cissus: A plant genus of the family VITACEAE. Cissus rufescence gum is considered comparable to TRAGACANTH.Chondrodysplasia Punctata, Rhizomelic: An autosomal recessive form of CHONDRODYSPLASIA PUNCTATA characterized by defective plasmalogen biosynthesis and impaired peroxisomes. Patients have shortened proximal limbs and severely disturbed endochondral bone formation. The metabolic defects associated with the impaired peroxisomes are present only in the rhizomelic form of chondrodysplasia punctata. (From Scriver et al, Metabolic Basis of Inherited Disease, 6th ed, p1497)Chemical Phenomena: The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.Hydrocarbons, HalogenatedPhospholipids: Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system.Anesthetics: Agents that are capable of inducing a total or partial loss of sensation, especially tactile sensation and pain. They may act to induce general ANESTHESIA, in which an unconscious state is achieved, or may act locally to induce numbness or lack of sensation at a targeted site.Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Egtazic Acid: A chelating agent relatively more specific for calcium and less toxic than EDETIC ACID.Surface-Active Agents: Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics.Structure-Activity Relationship: The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups.Bromine: A halogen with the atomic symbol Br, atomic number 36, and atomic weight 79.904. It is a volatile reddish-brown liquid that gives off suffocating vapors, is corrosive to the skin, and may cause severe gastroenteritis if ingested.Acetates: Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure.Polyethylene Glycols: Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.Kinetics: The rate dynamics in chemical or physical systems.Teratogens: An agent that causes the production of physical defects in the developing embryo.Allyl CompoundsAgrocybe: A genus of saprobic mushrooms in the family Bolbitiaceae that grow in grass, dung, garden mulch, or in woods.CyclopropanesAldehydes: Organic compounds containing a carbonyl group in the form -CHO.Alkynes: Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.Polychlorinated Biphenyls: Industrial products consisting of a mixture of chlorinated biphenyl congeners and isomers. These compounds are highly lipophilic and tend to accumulate in fat stores of animals. Many of these compounds are considered toxic and potential environmental pollutants.Chromatography, High Pressure Liquid: Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.Hematoporphyrins: Iron-free derivatives of heme with 4 methyl groups, 2 hydroxyethyl groups and 2 propionic acid groups attached to the pyrrole rings. Some of these PHOTOSENSITIZING AGENTS are used in the PHOTOTHERAPY of malignant NEOPLASMS.Phosphines: Inorganic or organic compounds derived from phosphine (PH3) by the replacement of H atoms. (From Grant & Hackh's Chemical Dictionary, 5th ed)Phenols: Benzene derivatives that include one or more hydroxyl groups attached to the ring structure.Organosilicon Compounds: Organic compounds that contain silicon as an integral part of the molecule.Indicators and Reagents: Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)Lipids: A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed)Methanol: A colorless, flammable liquid used in the manufacture of FORMALDEHYDE and ACETIC ACID, in chemical synthesis, antifreeze, and as a solvent. Ingestion of methanol is toxic and may cause blindness.

UV irradiation of polycyclic aromatic hydrocarbons in ices: production of alcohols, quinones, and ethers. (1/902)

Polycyclic aromatic hydrocarbons (PAHs) in water ice were exposed to ultraviolet (UV) radiation under astrophysical conditions, and the products were analyzed by infrared spectroscopy and mass spectrometry. Peripheral carbon atoms were oxidized, producing aromatic alcohols, ketones, and ethers, and reduced, producing partially hydrogenated aromatic hydrocarbons, molecules that account for the interstellar 3.4-micrometer emission feature. These classes of compounds are all present in carbonaceous meteorites. Hydrogen and deuterium atoms exchange readily between the PAHs and the ice, which may explain the deuterium enrichments found in certain meteoritic molecules. This work has important implications for extraterrestrial organics in biogenesis.  (+info)

Divinyl ether fatty acid synthesis in late blight-diseased potato leaves. (2/902)

We conducted a study of the patterns and dynamics of oxidized fatty acid derivatives (oxylipins) in potato leaves infected with the late-blight pathogen Phytophthora infestans. Two 18-carbon divinyl ether fatty acids, colneleic acid and colnelenic acid, accumulated during disease development. To date, there are no reports that such compounds have been detected in higher plants. The divinyl ether fatty acids accumulate more rapidly in potato cultivar Matilda (a cultivar with increased resistance to late blight) than in cultivar Bintje, a susceptible cultivar. Colnelenic acid reached levels of up to approximately 24 nmol (7 microgram) per g fresh weight of tissue in infected leaves. By contrast, levels of members of the jasmonic acid family did not change significantly during pathogenesis. The divinyl ethers also accumulated during the incompatible interaction of tobacco with tobacco mosaic virus. Colneleic and colnelenic acids were found to be inhibitory to P. infestans, suggesting a function in plant defense for divinyl ethers, which are unstable compounds rarely encountered in biological systems.  (+info)

Adaptation of bulk constitutive equations to insoluble monolayer collapse at the air-water interface. (3/902)

A constitutive equation based on stress-strain models of bulk solids was adapted to relate the surface pressure, compression rate, and temperature of an insoluble monolayer of monodendrons during collapse at the air-water interface. A power law relation between compression rate and surface pressure and an Arrhenius temperature dependence of the steady-state creep rate were observed in data from compression rate and creep experiments in the collapse region. These relations were combined into a single constitutive equation to calculate the temperature dependence of the collapse pressure with a maximum error of 5 percent for temperatures ranging from 10 degrees to 25 degrees C.  (+info)

Phospholipid metabolism in ehrlich ascites tumor cells. II. Turnover rate of ether phospholipids. (4/902)

1. Radioactive precursors of phospholipids, i.e., 32Pi, [1-14C]glycerol, [2-3H]glycerol, and [1-14C]acetate, were individually injected into the peritoneal cavity of mice bearing Ehrlich ascites tumor cells and the rates of incorporation were estimated. 2. Although [2-3H]glycerol was not practically incorporated into ether phospholipids, the other three radioactive precursors were incorporated into diacyl, 1-O-alkenyl-2-acryl-, and 1-O-alkyl-2-acryl-GPE (GPC). 3. In the experiments on 32Pi or [1-14C]acetate incorporation, 1-O-alkyl compounds in the ethanolamine phosphoglyceride fraction showed high specific activities in comparison with 1-acyl compounds. In the case of [1-14C]glycerol incorporation, a high rate of incorporation into 1-O-alkyl compounds was not found. In the choline phosphoglyceride fraction, a high rate of incorporation of the above precursors into 1-O-alkyl compounds was not observed. 4. The specific activities of 1-O-alkenyl compounds were fairly low compared with those of 1-acyl- and 1-O-acyl- and 1-O-alkyl compounds throughout the incorporation experiments with [1-14C]glycerol and [1-14C]acetate, but in 32Pi incorporation, 1-O-alkenyl compounds showed higher specific activities than 1-acyl compounds in ethanolamine phosphoglyceride, suggesting an exchange reaction of the phosphorylethanolamine moiety. 5. From the above findings, it appears that alkyl ether phospholipids of ethanolamine from may have a significant role in ascites tumor cells, based on their rapid turnover.  (+info)

The class B, type I scavenger receptor promotes the selective uptake of high density lipoprotein cholesterol ethers into caveolae. (5/902)

The uptake of cholesterol esters from high density lipoproteins (HDLs) is characterized by the initial movement of cholesterol esters into a reversible plasma membrane pool. Cholesterol esters are subsequently internalized to a nonreversible pool. Unlike the uptake of cholesterol from low density lipoproteins, cholesterol ester uptake from HDL does not involve the internalization and degradation of the particle and is therefore termed selective. The class B, type I scavenger receptor (SR-BI) has been identified as an HDL receptor and shown to mediate selective cholesterol ester uptake. SR-BI is localized to cholesterol- and sphingomyelin-rich microdomains called caveolae. Caveolae are directly involved in cholesterol trafficking. Therefore, we tested the hypothesis that caveolae are acceptors for HDL-derived cholesterol ether (CE). Our studies demonstrate that in Chinese hamster ovary cells expressing SR-BI, >80% of the plasma membrane associated CE is present in caveolae after 7.5 min of selective cholesterol ether uptake. We also show that excess, unlabeled HDL can extract the radiolabeled CE from caveolae, demonstrating that caveolae constitute a reversible plasma membrane pool of CE. Furthermore, 50% of the caveolae-associated CE can be chased into a nonreversible pool. We conclude that caveolae are acceptors for HDL-derived cholesterol ethers, and that caveolae constitute a reversible, plasma membrane pool of cholesterol ethers.  (+info)

The movement of an unemulsified oil test meal and aqueous- and oil-phase markers through the intestine of normal and bile-diverted rats. (6/902)

An unemulsified oil test meal containing aqueous- and oil-phase markers (PEG and 3-H labelled triether) was fed to control and bile fustula rats. PEG moved ahead of the lipid phase in all groups, and was of limited value as a marker for the test meal. Triether was an excellent marker for studies of gastric emptying. An unexpectedly high correlation was seen between the triether and the test meal and its digestion products in the intestine. The results suggest that triether is a valid marker for following the movement of lipid through the bowel under the conditions of this study. Triether/fat ratios indicated that fat absorption occurred largely from the upper small bowel in control animals and from the lower small bowel in the absence of bile. Bile diversion resulted in more rapid gastric emptying initially, but very slow gastric emptying of the last part of the oil test meal. Intestinal transit of test meal or either marker was not significantly affected by bile diversion. No evidence for a direct effect of bile diversion on gastrointestinal motility was found.  (+info)

Identification of selective mechanism-based inactivators of cytochromes P-450 2B4 and 2B5, and determination of the molecular basis for differential susceptibility. (7/902)

Rabbit cytochromes P-450 (P-450) 2B4 and 2B5 differ by only 12 amino acid residues yet they exhibit unique steroid hydroxylation profiles. Previous studies have led to the identification of active site residues that are determinants of these specificities. In this study, mechanism-based inactivators were identified that discriminate between the closely related 2B4 and 2B5 enzymes. A previously characterized inhibitor, 2-ethynylnaphthalene (2EN), was found to be selective for 2B4 inactivation. As inhibitor metabolism and the partition ratio affect susceptibility, molecular dynamics simulations were performed to assess the stability of the productive binding orientation of 2EN within 2B4 and 2B5 three-dimensional models. Although 2EN was stable within the 2B4 model, it exhibited substantial movement away from the heme moiety in the 2B5 model. However, heterologously expressed 2B5 was found to catalyze the oxidation of 2EN to the stable product 2-naphthylacetic acid. Thus, the increased mobility of 2EN may result in reduced susceptibility of 2B5 by increasing the probability that the reactive ketene intermediate hydrolyzes with water instead of reacting with active site residues. Another compound, 1-adamantyl propargyl ether (1APE), selectively inactivated 2B5. The structural basis for 2EN and 1APE susceptibility was assessed using active site mutants. Interconversion of 2EN susceptibility was observed for 2B4 or 2B5 mutants containing a single alteration at residue 363. Single substitutions in 2B4 also conferred susceptibility to 1APE; however, multiple alterations were required to reduce the susceptibility of 2B5. These alterations may influence inhibitor susceptibility by affecting the stability of the productive binding orientation.  (+info)

Carrier-mediated hepatic uptake of peptidic endothelin antagonists in rats. (8/902)

The endothelin antagonist BQ-123, an anionic cyclopentapeptide, is taken up by rat hepatocytes through active transport systems. Here, we have examined the hepatocellular uptake mechanism for several BQ-123 derivatives with anionic charges using isolated rat hepatocytes. BQ-485, a linear peptide, BQ-518, a cyclic peptide, and compound A, a cyclic peptide with a cationic moiety, were taken up by hepatocytes in a concentration-dependent manner. The uptake of BQ-485 was most efficient, whereas compound A showed comparable uptake with BQ-123. The uptake of these peptides was Na(+)- and energy-dependent, suggesting that active transport mechanisms are involved in their uptake into hepatocytes. BQ-485, BQ-518, and compound A can almost completely inhibit both the Na(+)-dependent and -independent uptake of [(3)H]BQ-123, with inhibition constants (K(i)) that are comparable to the Michaelis-Menten constants (K(m)) for their Na(+)-dependent and -independent uptake, respectively. Inhibition by BQ-485 was competitive, and the uptake of BQ-485 can be inhibited by BQ-123, with K(i) values that are comparable with the K(m) values for BQ-123 uptake. The uptake of BQ-123 by COS-7 cells transfected with either Na(+)-dependent taurocholate-cotransporting polypeptide (Ntcp) or Na(+)-independent basolateral organic anion-transporting polypeptide (oatp1) was minimal. Thus, these three peptides share the transporters that also recognize BQ-123 but appear to differ from Ntcp and oatp1.  (+info)

silyl enol ether couplingsilyl enol ether coupling
Supporting Information Sunlight-driven Synthesis of -Diketones via Oxidative Coupling of Enamines with Silyl Enol Ethers Catalyzed by [Ru(bpy) 3] 2+ ... Other enamines were prepared according to the literature procedures.2 Silyl enol ether 2a was purchased from TCI. B Watsona and Douglas Hayesb aDepartment of Pure and Applied Chemistry, WESTChem, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland, UK GlaxoSmithKline, Medicines Research Centre, Gunnels b Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK. The Mukaiyama aldol addition is an organic reaction and a type of aldol reaction between a silyl enol ether and an aldehyde or formate. The wanted silyl enol ether 22 was obtained in 93 % yield as 1 : 1 mixture of the diastereoisomers containing only 4 % of the unwanted silyl enol ether 21 as side product. Enol silyl ethers and their analogs are one of the most versatile substrate classes and enjoy widespread applications in organic synthesis (Fig. The protocol provides ...
Progesterone 3-acetyl enol ether - WikipediaProgesterone 3-acetyl enol ether - Wikipedia
Progesterone 3-acetyl enol ether, also known as progesterone acetate,[1] as well as 3-acetoxypregna-3,5-dien-20-one, is a progestin which was never marketed.[2][3][4][5] It was reported to possess similar potency to progesterone and hydroxyprogesterone caproate in the rabbit endometrial carbonic anhydrase test, a bioassay of progestogenic activity.[2][3] In addition, it was able to maintain pregnancy in animals.[2] Progesterone 3-acetyl enol ether is closely related to quingestrone, which is also known as progesterone 3-cyclopentyl enol ether and was formerly marketed as an oral contraceptive.[6] The 3-acetyl ether may be cleaved from progesterone 3-acetyl enol ether in vivo and, based on its chemical structure, this may result in the transformation of progesterone 3-acetyl enol ether into 3α-dihydroprogesterone and/or 3β-dihydroprogesterone. 3β-Dihydroprogesterone has been reported to possess about the same progestogenic potency as progesterone in the Clauberg test, whereas ...
Patent US4837284 - Novel poly(aryl ether ketone)-polyester block copolymers - Google PatentsPatent US4837284 - Novel poly(aryl ether ketone)-polyester block copolymers - Google Patents
Described herein are novel block copolymers wherein one block is a poly(aryl ether ketone) oligomer and other block is a liquid crystalline polyester oligomer. Processes for the preparation of the subject copolymers are also described. The novel block copolymers display excellent mechanical properties, good high temperatures stability and excellent solvent and chemical resistance.
Patente US4861915 - Poly (aryl ether ketone) block copolymers - Google PatentesPatente US4861915 - Poly (aryl ether ketone) block copolymers - Google Patentes
Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
Use of estrogen related receptor-modulating aryl ethers - Player, Mark R.Use of estrogen related receptor-modulating aryl ethers - Player, Mark R.
Therapeutic methods of using certain heterocyclic arylidene aryl ether compounds for treating diseases or disorders mediated through modulation of estrogen related receptor alpha are described.
Academic JournalsAcademic Journals
Authors: SEYED MOHAMMAD VAHDAT, ROBABEH BAHARFAR Abstract: A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been developed. Using guanidine hydrochloride as a new catalyst and water-acetone as green solvent, dialkyl acetylenedicarboxylates were reacted with substituted phenols or naphthols in room temperature to produce vinyl aryl ethers in good to excellent yields. Keywords: Guanidine hydrochloride, dialkyl acetylenedicarboxylates, vinyl aryl ether, O-vinylation, water solvent Full Text: PDF ...
ether - Are eth transactions still replayed on the etc chain? - Ethereum Stack Exchangeether - Are eth transactions still replayed on the etc chain? - Ethereum Stack Exchange
EIP-155 is optional, and performed by the wallet software. EIP-155 is only active for when the Chain ID is not 0.. A transaction that specifies a Chain ID of 0, that is signed by a private key can still be broadcast on any chain (so long as that address of that private key has a balance and the nonce is correct).. If a transaction is signed with Chain ID of 1, it will only work on the homestead (ETH) chain, so would not be repayable on ETC (at the time, the serializing format was completely incompatible with ETC anyways).. However, prior to ETC implementing EIP-155, the ETC transactions were still being signed by wallet software with Chain ID 0, so they would be repayable on ETH. So, it would have been enough to prevent ETH from being replayed on ETC, but not vice versa.. I purposely use Chain ID of 0 occasionally when I want to deploy the same contract to multiple networks, with the same contract address, since I can just broadcast the same transaction on each network.. If you are using parity ...
Catalytic selective mono- and difluoroalkylation using fluorinated silyl enol ethers - Chemical Communications (RSC Publishing...Catalytic selective mono- and difluoroalkylation using fluorinated silyl enol ethers - Chemical Communications (RSC Publishing...
For our efforts in developing tandem reactions that utilize waste from upstream steps to benefit the downstream steps: (a) J.-J. Cao, F. Zhou and J. Zhou, Angew. Chem., Int. Ed., 2010, 49, 4976 CrossRef CAS PubMed; (b) L. Chen, T.-D. Shi and J. Zhou, Chem. - Asian J., 2013, 8, 556 CrossRef CAS PubMed; (c) L. Chen, Y. Du, X.-P. Zeng, T.-D. Shi, F. Zhou and J. Zhou, Org. Lett., 2015, 17, 1557 CrossRef CAS; (d) X.-P. Zeng, Z.-Y. Cao, X. Wang, L. Chen, F. Zhou, F. Zhu, C.-H. Wang and J. Zhou, J. Am. Chem. Soc., 2016, 138, 416 CrossRef CAS; (e) X.-P. Zeng and J. Zhou, J. Am. Chem. Soc., 2016, 138, 8730 CrossRef CAS; (f) X. Ye, X.-P. Zeng and J. Zhou, Acta Chim. Sin., 2016, 74, 984 CrossRef CAS; (g) F. Zhu, P.-W. Xu, F. Zhou, C.-H. Wang and J. Zhou, Org. Lett., 2015, 17, 972 CrossRef CAS PubMed; (h) X.-T. Gao, C.-C. Gan, S.-Y. Liu, F. Zhou, H.-H. Wu and J. Zhou, ACS Catal., 2017, 7, 8588 CrossRef CAS , and ref. 25d. For selected examples from other groups, see: ; (i) T. Kinoshita, S. Okada, S.-R. ...
ChemIDplus - 68511-36-4 - Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, mono-C11-15-alkyl ethers, phosphates -...ChemIDplus - 68511-36-4 - Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, mono-C11-15-alkyl ethers, phosphates -...
68511-36-4 - Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, mono-C11-15-alkyl ethers, phosphates - Searchable synonyms, formulas, resource links, and other chemical information.
US20060241245A1 - New polyether based monomers and highly cross-linked amphiphile resins - Google PatentsUS20060241245A1 - New polyether based monomers and highly cross-linked amphiphile resins - Google Patents
The present invention relates to a cross-linked polyether which is obtained by polymerization of at least one monomer selected from the group consisting of (a) (α-X-methyl)vinyl-EWG, (α-X-methyl)vinyl-ERG, or (α-X-methyl)vinyl-aryl, where X is oxygen, sulfur, PEG, PPG or poly(THF); (b) a monomer which is polymerizable with a PEG, PPG or poly(THF) cross-linker having at least one (α-X-methyl)vinyl-EWG, (α-X-methyl)vinyl-ERG or (α-X-methyl)vinyl-aryl, where X is oxygen, sulfur, PEG, PPG, or poly(THF); (c) a PEG, PPG, or poly(THF) cross-linker having at least an acrylamide or a methacrylamide end group; and (d) mixtures thereof. Various monomers, resins and methods for preparing such cross-linked polyethers are also disclosed.
US Patent # 3,941,849. Polyethers and method for making the same - Patents.comUS Patent # 3,941,849. Polyethers and method for making the same - Patents.com
Hydroxy terminated polyethers are obtained by reacting (1) epoxide and oxetane monomers with (2) a telogen at least partially soluble with the monomers, reactive with said monomers and being selected
V.I.D.E.O. killed the radio star - writchs wramblingsV.I.D.E.O. killed the radio star - writch's wramblings
Traditional "common" vaccines targeting measles, mumps and rubella for instance, contain small amounts of "attenuated" live viruses which have been "weakened" but not 100% killed outright. Research has shown that these weakened "live" viruses create a very mild form of the disease in the human that has been vaccinated, which in turn creates a cellular immunity from that pathogen. The science behind this is correct, and valid for the most part. To keep the targeted viral pathogen in a perpetually weakened state, specific amounts of formaldehyde and ether are typically added, and in some formulations, mercury in the form of thimerasol is added as a preservative to keep the egg albumin cells from decaying and dying prematurely. The established theory behind all of this vaccination is the "protect the herd" theory which originated with Pasteur in the late 19th century. As in all vaccines, a certain small percentage of the herd will develop severe, full blown disease states CAUSED by the ...
Solvay Increases Specialty Polymers Capacity in India | Chemical WeekSolvay Increases Specialty Polymers Capacity in India | Chemical Week
Solvay says it is in the process of increasing the production capacity of its high-performance polymers KetaSpire poly(ether ether ketone) (PEEK) and AvaSpire poly(aryl ether ketone) by 70%, at the...
Browse by Author - ePrints@IIScBrowse by Author - [email protected]
Lakshminarayanan, Abirami and Jayaraman, Narayanaswamy (2017) Successive outermost-to-core shell directionality of the protonation of poly(propyl ether imine) dendritic gene delivery vectors. In: CANADIAN JOURNAL OF CHEMISTRY, 95 (9). pp. 965-974. Syal, Kirtimaan and Flentie, Kelly and Bhardwaj, Neerupma and Maiti, Krishnagopal and Jayaraman, Narayanaswamy and Stallings, Christina L and Chatterji, Dipankar (2017) Synthetic (p)ppGpp Analogue Is an Inhibitor of Stringent Response in Mycobacteria. In: ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 61 (6). Sharma, Anindra and Kumar, Prabhat and Pal, Rita and Jayaraman, Narayanaswamy (2016) Dendritic bis- and tetrakis-iminodiacetic acid-boronate complexes in one-pot cross-coupling reactions. In: JOURNAL OF ORGANOMETALLIC CHEMISTRY, 819 . pp. 138-146. Singh, Yashapal and Jayaraman, Narayanaswamy (2016) Multicolor Reversible Thermochromic Properties of Gallic Acid-Cored Polydiacetylenes Appended with Poly(alkyl aryl ether) Dendrons. In: MACROMOLECULAR ...
Sodium Laureth (2) Sulfate - Performer Alkyl Ether Sulfate G406 - CAS# 9004-82-4 | Graham ChemicalSodium Laureth (2) Sulfate - Performer Alkyl Ether Sulfate G406 - CAS# 9004-82-4 | Graham Chemical
Sodium Laureth (2) Sulfate is a white to yellowish paste or liquid used as a detergent and surfactant in many personal care and cleaning products.
Regio- and Stereoselective Deuteration of Allylic Chlorides Controlled by Neighboring Alcohol or Ether GroupsRegio- and Stereoselective Deuteration of Allylic Chlorides Controlled by Neighboring Alcohol or Ether Groups
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) ...
An ab initio/Rice-Ramsperger-Kassel-Marcus study of the hydrogen-abstraction reactions of methyl ethers, H3COCH3−x(CH3)x, x = 0...An ab initio/Rice-Ramsperger-Kassel-Marcus study of the hydrogen-abstraction reactions of methyl ethers, H3COCH3−x(CH3)x, x = 0...
A theoretical study of the mechanism and kinetics of the H-abstraction reaction from dimethyl (DME), ethylmethyl (EME) and iso-propylmethyl (IPME) ethers by the ˙OH radical has been carried out using the high-level methods CCSD(T)/CBS, G3 and G3MP2BH&H. The computationally less-expensive methods of G3 and G3
Marine Drugs | Free Full-Text | Synthesis of Marine Polycyclic Polyethers via Endo-Selective Epoxide-Opening CascadesMarine Drugs | Free Full-Text | Synthesis of Marine Polycyclic Polyethers via Endo-Selective Epoxide-Opening Cascades
The proposed biosynthetic pathways to ladder polyethers of polyketide origin and oxasqualenoids of terpenoid origin share a dramatic epoxide-opening cascade as a key step. Polycyclic structures generated in these biosynthetic pathways display biological effects ranging from potentially therapeutic properties to extreme lethality. Much of the structural complexity of ladder polyether and oxasqualenoid natural products can be traced to these hypothesized cascades. In this review we summarize how such epoxide-opening cascade reactions have been used in the synthesis of ladder polyethers and oxasqualenoid natural products.
US3291843A - Fluorinated vinyl ethers and their preparation - Google PatentsUS3291843A - Fluorinated vinyl ethers and their preparation - Google Patents
United States All of the known reactions for the preparation of halogenated vinyl ethers involve the use of an alcohol. The preparation of a completely fluorinated vinyl ether by these prior art methods would, therefore, require a completely fluorinated alcohol. It has, however, been established and is well known (see, for example, p. 137 of the ACS Monograph, Aliphatic Fluorine Compounds, by Lovelace et al., published 1958) that completely fluorinated primary alcohols are inherently unstable and cannot be isolated. Hence, it is apparent that the prior art techniques for the preparation of trifluorovinyl ethers are not suitable for the preparation of perfluorinated vinyl ethers and vinyl ethers wherein the ether group is attached to a CF group. It is, therefore, the principal object of the present inven tion to provide a process for the preparation of perfiuorinated vinyl ethers and vinyl ethers wherein the ether oxygen is attached to a CF group. It is another object to provide a method for the ...
Polyethers | definition of Polyethers by Medical dictionaryPolyethers | definition of Polyethers by Medical dictionary
Looking for online definition of Polyethers in the Medical Dictionary? Polyethers explanation free. What is Polyethers? Meaning of Polyethers medical term. What does Polyethers mean?
Dudley Benzylation Reagent | Sigma-AldrichDudley Benzylation Reagent | Sigma-Aldrich
Benzyl ethers and derivatives are among the most widely used protecting groups in organic synthesis. Cleavage can be effected under a variety of conditions including hydrogenolysis, oxidation, and acid decomposition. Typically, protection of alcohols in the form of a benzyl ether requires harsh reaction conditions. Williamson ether synthesis necessitates strongly basic conditions to generate an alkoxide nucleophile (Figure 1). Alternatively, trichloroacetimidate reagents can be employed in the presence of triflic acid (HOTf) as a promoter. Many complex alcohols are incompatible with these strongly basic or acidic conditions. For example, b-hydroxy esters are prone to elimination, epimerization at the a-carbon, or retro-aldol reactions under acid or base catalysis. Additionally, resident protecting groups on the alcohol substrate may be incompatible with non-pH-neutral reactions. Under acidic conditions, trimethylsilyl (TMS) ethers are easily cleaved, while acetals can undergo migration in polyol ...
HEAT TRANSFER FLUIDS WITH CARBON NANOCAPSULES - Patent applicationHEAT TRANSFER FLUIDS WITH CARBON NANOCAPSULES - Patent application
0028]each B, independently, is --Ra--O--[Si(CH3)2-O-]1-100, C1-2000 alkyl, C6-40 aryl, C7-60 alkylaryl, C7-60 arylalkyl, (C1-30 alkyl ether)1-100, (C6-40 aryl ether)1-100, (C7-60 alkylaryl ether)1-100, (C7-60 arylalkyl ether)1-100, (C1-30 alkyl thioether)1-100(C6-40 aryl thioether)1-100, (C7-60 alkylaryl thioether)1-100, (C7-60 arylalkyl thioether)1-100, (C2-50 alkyl ester)1-100, (C7-60 aryl ester)1-100, (C8-70 alkylaryl ester)1-100, (C8-70 arylalkyl ester)1-100, --R--CO--O--(C1-30 alkyl ether)1-100, --R--CO--O--(C6-40 aryl ether)1-100, --R--CO--O--(C7-C60 alkylaryl ether)1-100, --R--CO--O--(C7-60 arylalkyl ether)1-100, (C4-50 alkyl urethane)1-100 (C14-60 aryl urethane)1-100, (C10-80 alkylaryl urethane)1-100 (C10-80 arylalkyl urethane)1-100, (C5-50 alkyl urea)1-100, (C14-60 aryl urea)1-100 (C10-80 alkylaryl urea)1-100, (C10-80 arylalkyl urea) 1-100, (C2-50 alkyl amide)1-100, (C7-60 aryl amide)1-100, (C8-70 alkylaryl amide) 1-100 (C8-70 arylalkyl amide)1-100, (C3-30 alkyl anhydride)1-100, (C8-50 ...
CONVENIENT ETHERIFICATION USING TRICHLOROACETIMIDATES AND SYNTHESIS OF by Kyle Timothy Howard"CONVENIENT ETHERIFICATION USING TRICHLOROACETIMIDATES AND SYNTHESIS OF" by Kyle Timothy Howard
Alcohols are a common form of functionality in organic chemistry, and are often present in biologically active molecules. The protection of hydroxy groups is crucial in long multi-step synthetic routes, as the unprotected alcohol is typically not compatible with many reagents. Alcohols are often protected as corresponding benzyl ether, which can then be removed when desired to reveal the alcohol functional group. Classic methodology for protection of alcohols as benzyl ethers requires harsh conditions utilizing strong acids and bases, which functions well for simple substrates. In more complex multifunctional molecules this can lead to degradation and side products. Therefore, there is a need for the development of milder conditions for the protection of alcohols. Recently a number of reagents have been developed to form benzyl ethers under mild, neutral conditions that and do not disturb the sensitive functionality in complex molecules. Many of these reagents have been based on imidate-type systems.
Handbook of Engineering and Specialty Thermoplastics, Volume 3: Polyethers and Polyesters | Polymer Characterization | Polymer...Handbook of Engineering and Specialty Thermoplastics, Volume 3: Polyethers and Polyesters | Polymer Characterization | Polymer...
List of Contributors. 1. Engineering and Specialty Thermoplastics: Polyethers and Polyesters (Sabu Thomas and Visakh P.M.).. 1.1 Introduction.. 1.2 Polyesters Synthesis.. 1.3 Polyethers.. 1.4 Individual Polyethers and Polyesters and Their Application.. 1.5 New Challenges and Opportunities.. 2. Poly(phenylene oxide) (Mong Liang).. 2.1 Introduction and History.. 2.2 Monomer.. 2.3 Polymerization and Mechanism.. 2.4 Properties.. 2.5 Compounding and Special Additives.. 2.6 Processing.. 2.7 Applications.. 2.8 Environmental Impact and Recycling.. 2.9 Recent Developments in Poly Phenylene Oxide Based Blends and Composites and Their Applications.. 3. Polyether Ether Ketone (Jinwen Wang).. 3.1 Introduction and History.. 3.2 Polymerization and Fabrication.. 3.3 Properties.. 3.4 Chemical Properties.. 3.5 Environmental Resistance.. 3.6 Compounding and Special Additives.. 3.7 Processing.. 3.8 Applications.. 3.9 Environmental Impact and Recycling.. 3.10 Recent Developments in PEEK Based Blends and Composites ...
Glycol Ether PM Acetate Reagent Grade supplier distributor- CAS 108-65-6Glycol Ether PM Acetate Reagent Grade supplier distributor- CAS 108-65-6
Glycol Ether PM Acetate Reagent Grade, Glycol Ether PM Acetate Reagent Grade supplier, Glycol Ether PM Acetate Reagent Grade distributor, CAS 108-65-6, Glycol Ether PM Acetate Reagent Grade manufacturer, Glycol Ether PM Acetate Reagent Grade wholesale
Ethyl PropionateEthyl Propionate
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Dense Ether Theory - Thunderbolts Forum (v2.0)Dense Ether Theory - Thunderbolts Forum (v2.0)
What is the ether and why is it so difficult to detect it? I reflected on this matter for a seriously long time and here are the outcomes I have been led to: I think that all the contradictions about whether the ether exists or not are the result of wrong interpretation of ethers properties. The ether has always been presented as an aero - form environment (gaseous). That was the essential mistake. The ether has a very strong density. It is known that the more dense a substance, the higher is the speed of wave propagation within it. When comparing acoustic speed in the air and the light speed I have drawn a conclusion that ether density is several thousand times higher than air density. It is not the ether that is aero - form (gaseous) but the material world is an aero - form to the ether ...
Alcohols, C10-16, ethoxylated, sulfates,... - Registration Dossier - ECHAAlcohols, C10-16, ethoxylated, sulfates,... - Registration Dossier - ECHA
The alkyl ether sulfates grouped within the AES category show similar structural, physico-chemical, environmental and toxicological properties. The approach of grouping different AES for the evaluation of their effects on human health and the environment was also made by the Danish EPA [1] and HERA [2], supporting the read across approach between structurally related AES. A detailed justification for the category approach and read-across is provided in the technical dossier (see IUCLID Section 13). In case of abiotic degradation hydrolysis is not an important process for alkyl ether sulfates due to the chemical structure of these substances. All members of the category alkyl ether sulfates are readily biodegradable which is proved by many studies available for the certain mixtures. Due to the ready biodegradability of alkyl ether sulfates it is unlikely that the substances persist in the environment. Furthermore, the results of different wastewater simulation tests which were conducted according ...
Benzyl etherBenzyl ether
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Containers may explode if exposed to fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam ...
Aryl ether pyridazinone derivatives - Patent # 8445489 - PatentGeniusAryl ether pyridazinone derivatives - Patent # 8445489 - PatentGenius
Compounds of the formula I, in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and X have the meanings indicated in Claim 1, are inhibitors of tyrosine kinases, in particular Met kinase, and can be employed, inter alia, for the treatment of tumors.
Dipropyleneglycol Methyl Ether (DPGME) Market Development Trends Forecast, Regional Overview and Consumers Analysis by 2025 -...Dipropyleneglycol Methyl Ether (DPGME) Market Development Trends Forecast, Regional Overview and Consumers Analysis by 2025 -...
By the product type, the market is primarily split into. DPGME ≥99.0%. DPGME ≥99.5%. Others. By the end users/application, this report covers the following segments. Coatings & Paints. Cleaners & Inks. Electronics. Chemical Additives. Others. Buy this report with price 3350$:. https://www.qyresearch.com/settlement/pre/a419779a513112b180fcb0d95af2defb,0,1,Global-Dipropyleneglycol-Methyl-Ether-DPGME-Market-Report-History-and-Forecast-Breakdown-Data-by-Manufacturers-Key-Regions-Types-and-Applicatio. Scope of Global Dipropyleneglycol Methyl Ether (DPGME) Market. The research report gives a wide overview of the new and emerging trends in the market. The report provides an assessment of the strengths and weaknesses of the market along with the other factors which are expected to hinder the market. It also explains the dynamics of Dipropyleneglycol Methyl Ether (DPGME) market in detail for a comprehensive understanding.. The drivers in the Dipropyleneglycol Methyl Ether (DPGME) market are all the ...
US Patent for Aqueous coating compositions containing flatting agents and low molecular weight polyethers Patent (Patent # 4...US Patent for Aqueous coating compositions containing flatting agents and low molecular weight polyethers Patent (Patent # 4...
Aqueous coating compositions consist essentially of: (a) a water-insoluble film-forming polymeric resin; (b) water-insoluble agglomerated particulate beads of urea, melamine or phenol and formaldehyde; (c) polyethers having the formulaH(OC.sub.x H.sub.2x).sub.n OHwhere x is from 2 to 4 and n is a number such that the polyether has a weight average molecular weight of from about 200 to about 1000; (d) pigments; and (e) water. The aqueous coating compositions are especially useful for imparting to metal coil a low gloss pigmented protective finish having good metal marking resistance.
Organic Chemistry: Acyclic EthersOrganic Chemistry: Acyclic Ethers
Ethers are R-O-R. The RO- is called the alkoxy group. When you name alkoxides, replace the -ide with -y. For example, the C2H5 group is known as an ethyl- group. However, the C2H5O group is known as the ethoxy- group. Below is a table with the most common oxy- groups youll find. ...
ShinEtsu Tylose Cellulose Ethers | WhitChemShinEtsu Tylose Cellulose Ethers | WhitChem
ShinEtsu Tylose range of cellulose ethers are used in virtually all parts of daily life. Click here to view our ShinEtsu Tylose product range.
NIOSHTIC-2 Publications Search - 00168042 - Results of testing fifteen glycol ethers in a short-term in vivo reproductive...NIOSHTIC-2 Publications Search - 00168042 - Results of testing fifteen glycol ethers in a short-term in vivo reproductive...
A screening bioassay of the reproductive effects of glycol ethers was conducted in mice. Pregnant CD-1-mice were administered 15 glycol ethers orally on days seven through 14 of gestation at concentrations ranging up to 11270mg/kg. The potential of the compounds for causing adverse reproductive effects was evaluated by determining pup survival in-utero, pup perinatal survival, and postnatal surviv
Glycol Ethers Market | Growth, Trends, and Forecast (2020 - 2025)Glycol Ethers Market | Growth, Trends, and Forecast (2020 - 2025)
The market is segmented by Type (E-series and P-series), Application (Solvent, Anti-icing Agent, Hydraulic and Brake Fluid, and Chemical Intermediate), End-user Industry (Paints and Coatings, Printing, Pharmaceuticals, Cosmetic and Personal Care, Adhesives, and Others End-user Industries), and Geography (Asia-Pacific, North America, Europe, South America, and Middle-East and Africa)
Glycol ethers | Asia | Prices, News & Market Analysis | ICIS.comGlycol ethers | Asia | Prices, News & Market Analysis | ICIS.com
Understand ICIS coverage of the Glycol ethers Asia market. Use the ICIS price assessments and market coverage to track the Glycol ethers Asia market.
ether wallet | BenhamKvåleether wallet | BenhamKvåle
By right Ethereum is actually contacted among the absolute most popular crypto space tasks. Produced throughVitaliy Buterin it supplies decentralized environment, where creators from various sections of the world have the ability to cultivate their own dApps. To guarantee stable performance, system makes use of Ether mementos. Similarly to Bitcoin and other cryptocurrencies, Ether uses social and personal tricks for deals (instead of checking account). A location (software application or unit), where these tricks are actually stashed and also where you can easily obtain or even deliver Ether is actually referred to as Ethereum wallet. However, eth wallet is not saved in Ethereum timeless wallet or anywhere else. Muchlike every other cryptocurrency Ether doesn t exist in a very clear design. Customers are precisely given data, whichallows them to access their purses. Your properties are actually absolutely nothing a lot more that Blockchain reports and also your Ethereum wallet communicates just ...
Ether Factory, Custom Ether OEM/ODM Manufacturing CompanyEther Factory, Custom Ether OEM/ODM Manufacturing Company
Looking for ether factory direct sale? You can buy factory price ether from a great list of reliable China ether manufacturers, suppliers, traders or plants verified by a third-party inspector. Source with confidence.
Patent US3715378 - Fluorinated peroxy polyether copolymers and method for preparing them from ... - Google PatentsPatent US3715378 - Fluorinated peroxy polyether copolymers and method for preparing them from ... - Google Patents
United States Patent O US. Cl. 260-463 7 Claims ABSTRACT OF THE DISCLOSURE Fluorinated linear polyethers of the general formula 2 4 P 2 Q( R. B wherein C 1 represents a perfluoroalkylene unit derived from the opening of a double bond of a molecule of tetrafiuoroethylene; the two perfluoroalkylene units have a random distribution along the polyether chain; -(O) represents an oxygen atom having a random distribution along the polymer chain and linked in the peroxidic form to the different oxyperfluoroalkylene units; A and B may be the same or different and each is a radical selected from the group consisting of CF;,--, -COF, and CF -COF; P and Q are each from 1 to 199, R is from 0 to 199, the sum of P+Q is between 2 and 200, the ratio Q/P is between 0.1 and 10, the ratio R/P is between 0 and 1, and the ratio R/(P+Q+1) is between 0 and 0.8. Also in cludes derivatives of such polyethers, as by hydrolysis, esterification, salt formation, amidation, dehydration of the amide to a nitrile, and ...
Polyether AminePolyether Amine
Wholesale Polyether Amine dari China, Perlu mencari murah Polyether Amine seperti harga yang rendah tetapi pengeluar terkemuka. Hanya mencari jenama yang berkualiti tinggi di Polyether Amine menghasilkan kilang, Anda boleh juga maklum balas tentang apa yang anda mahu, mula menyimpan dan meneroka kami Polyether Amine, Kamiakan membalas anda dalam terpantas ...
N-Aminodihydrothebainonium methyl ether chloride | C19H27ClN2O3 - PubChemN-Aminodihydrothebainonium methyl ether chloride | C19H27ClN2O3 - PubChem
N-Aminodihydrothebainonium methyl ether chloride | C19H27ClN2O3 | CID 5491707 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
CAS # 71939-51-0, alpha-Dihydroartemisinin methyl ether, (+)-alpha-Artemether, SM 229, alpha-ArtemetherCAS # 71939-51-0, alpha-Dihydroartemisinin methyl ether, (+)-alpha-Artemether, SM 229, alpha-Artemether
chemBlink provides information about CAS # 71939-51-0, alpha-Dihydroartemisinin methyl ether, (+)-alpha-Artemether, SM 229, alpha-Artemether, molecular formula: C16H26O5.
LIPID MAPS® Lipidomics GatewayLIPID MAPS® Lipidomics Gateway
The LIPID MAPS® glycerolipid abbreviations (MG,DG,TG) are used here to refer to species with one, two or three radyl side-chains, respectively, where the structures of the side chains are indicated within parentheses in the Prefix(sn1/sn2/sn3) format (e.g. TG(16:0/18:1(9Z)/18:0). Acyl chains are assumed by default. The alkyl ether linkage is represented by the O- prefix, e.g. DG(O-16:0/18:1(9Z)/0:0), whereas the 1Z-alkenyl ether (Plasmalogen) linkage is represented by the P- prefix, e.g. and DG(P-14:0/18:1(9Z)/0:0 ...
LIPID MAPS® Lipidomics GatewayLIPID MAPS® Lipidomics Gateway
The LIPID MAPS® glycerolipid abbreviations (MG,DG,TG) are used here to refer to species with one, two or three radyl side-chains, respectively, where the structures of the side chains are indicated within parentheses in the Prefix(sn1/sn2/sn3) format (e.g. TG(16:0/18:1(9Z)/18:0). Acyl chains are assumed by default. The alkyl ether linkage is represented by the O- prefix, e.g. DG(O-16:0/18:1(9Z)/0:0), whereas the 1Z-alkenyl ether (Plasmalogen) linkage is represented by the P- prefix, e.g. and DG(P-14:0/18:1(9Z)/0:0 ...
DOWANOL™ PnB Glycol Ether | Dow Inc.DOWANOL™ PnB Glycol Ether | Dow Inc.
|p>A fast-evaporating, hydrophobic glycol ether with high solvency and excellent coupling abilities. It is partly water soluble and miscible with most organic solvents. This is extensively used in heavy-duty cleaning formulations.|/p>
On Classes of Stuck Ether and Potential Solutions | Parity TechnologiesOn Classes of Stuck Ether and Potential Solutions | Parity Technologies
Since Ethereum went live two and a half years ago, users and developers have often struggled with the usability and building on this new Frontier of development.. The issues began almost immediately as the first users of Ethereum had to grapple with a command line interface that was extremely unforgiving of mistakes. It saw thousands of Ether sent to address 0x0, as any transaction with an ill-formed "to" address was interpreted by the client as a send to 0x0.. Then a few months later a bug was discovered in a library of Javascript utilities written by the Foundation and used by many companies and individuals to generate wallets. It resulted in approximately 1 in 128 accounts, that were produced by some teams, being rendered useless. Thousands more Ether became stuck.. While the hack on the DAO and the fork that followed are well known; The problems post-fork with transactions replaying across the Ethereum and Ethereum Classic network are not recognized as widely - a failure to anticipate that ...
Global Polyether Imide Sales Market Report 2017 : ReportsnReportsGlobal Polyether Imide Sales Market Report 2017 : ReportsnReports
[107 Pages Report] Check for Discount on Global Polyether Imide Sales Market Report 2017 report by QYResearch Group. In this report, the global Polyether Imide market is valued...
Administering gas and ether - Stock Image - C026/2965 - Science Photo LibraryAdministering gas and ether - Stock Image - C026/2965 - Science Photo Library
Administering gas and ether to a patient in a sitting position, using Clovers apparatus. From RJ Probyn-Williams A Practical Guide to the Administration of Anaesthetics, London, 1901.
gen:LOCK Cammie Ether T-Shirt - Rooster Teeth Storegen:LOCK Cammie Ether T-Shirt - Rooster Teeth Store
gen:LOCK tee featuring Cammie in her Ether white rabbit form. Details + Care Unisex fit 100% Cotton Machine wash cold/tumble dry low
Paritys Hard Fork Fix for $160 M in Frozen Ether | FT ReporterParity's Hard Fork Fix for $160 M in Frozen Ether | FT Reporter
Parity technologies have a report about the investigation that they made into multi-signature wallet bug, which froze millions of dollars worth of ether. It is
Ether Dream 2 - Page 3Ether Dream 2 - Page 3
Hey folks - After a long long time, Im finally ready to announce the next gen of the Ether Dream! http://ether-dream.com/ed2outside.jpg Whats the same: - Same form factor - comes in a box or can be integrated into a projector - Same network protocol, driver, etc - Same price
NOS Ether out of stock!! :( - AnabolicMinds.comNOS Ether out of stock!! :( - AnabolicMinds.com
Is it gonna be back in stock before the sale is done? Also when is the sale gonna end? I want to pick up a couple things but want NOS Ether...
Global Polyether Block Amide (PEBA) Market by Manufacturers, Regions, Type and Application, Forecast to 2021 : ReportsnReportsGlobal Polyether Block Amide (PEBA) Market by Manufacturers, Regions, Type and Application, Forecast to 2021 : ReportsnReports
[117 Pages Report] Check for Discount on Global Polyether Block Amide (PEBA) Market by Manufacturers, Regions, Type and Application, Forecast to 2021 report by Global Info Research. ...
Isothymol methyl etherIsothymol methyl ether
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
Ullmann diaryl ether synthesis: rate acceleration by 2,2,6,6-tetramethylheptane-3,5-dione. | Sigma-AldrichUllmann diaryl ether synthesis: rate acceleration by 2,2,6,6-tetramethylheptane-3,5-dione. | Sigma-Aldrich
Sigma-Aldrich offers abstracts and full-text articles by [Elizabeth Buck, Zhiguo Jake Song, David Tschaen, Peter G Dormer, R P Volante, Paul J Reider].
US Patent # 5,990,359. Process for the production of fluoromethylhexafluoroisopropylether - Patents.comUS Patent # 5,990,359. Process for the production of fluoromethylhexafluoroisopropylether - Patents.com
Process for producing Sevoflurane anaesthetic which comprises reacting hexafluoroisopropyl alcohol with essentially pure bis(fluoromethyl)ether. The bis(fluoromethyl)ether is preferably obtained by th
Ether DreamEther Dream
Track I composed in Reason 5 using only custom Subtractor patches.. It was not made with anything particular in mind. Just came up with main melody and built everything else around it.. Let me know what you think. :,. ...
Ether 8Ether 8
There is strife and contention over the kingdom-Akish forms an oath-bound secret combination to slay the king-Secret combinations are of the devil and result in the destruction of nations-Modern Gentiles are warned against the secret combination that will seek to overthrow the freedom of all lands, nations, and countries.
EtherEther
Mass spectral interpretationMass spectral interpretation
Speed of lightSpeed of light
Diethyl etherDiethyl ether
Multiverse (Magic: The Gathering)Multiverse (Magic: The Gathering)
Ethylene oxideEthylene oxide
TetrahydrofuranTetrahydrofuran
Organolithium reagentOrganolithium reagent
Vinyl cationVinyl cation
MethoxyfluraneMethoxyflurane
A. O. ZossA. O. Zoss
AmideAmide
SolventSolvent
AM-1235AM-1235
Semen qualitySemen quality
HydroalkoxylationHydroalkoxylation
EsterEster
2-Butoxyethanol2-Butoxyethanol
Rubbing alcoholRubbing alcohol
BiofuelBiofuel
Ben EhrenreichBen Ehrenreich
On Physical Lines of ForceOn Physical Lines of Force
Robert Etheridge, JuniorRobert Etheridge, Junior
CN LesterCN Lester
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CorannuleneCorannulene
Roy M. HarrisonRoy M. Harrison
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Use of estrogen related receptor-modulating aryl ethers - Player, Mark R.Use of estrogen related receptor-modulating aryl ethers - Player, Mark R.
Patente US4861915 - Poly (aryl ether ketone) block copolymers - Google PatentesPatente US4861915 - Poly (aryl ether ketone) block copolymers - Google Patentes
silyl enol ether couplingsilyl enol ether coupling
Sodium Laureth (2) Sulfate - Performer Alkyl Ether Sulfate G406 - CAS# 9004-82-4 | Graham ChemicalSodium Laureth (2) Sulfate - Performer Alkyl Ether Sulfate G406 - CAS# 9004-82-4 | Graham Chemical
Ep. 368: Searching for the Aether Wind: the Michelson-Morley Experiment | Astronomy CastEp. 368: Searching for the Aether Wind: the Michelson-Morley Experiment | Astronomy Cast
Ether - WikipediaEther - Wikipedia
Category:Ethers - Wikimedia CommonsCategory:Ethers - Wikimedia Commons
Glycol ethers - WikipediaGlycol ethers - Wikipedia
Category:Halogenated ethers - Wikimedia CommonsCategory:Halogenated ethers - Wikimedia Commons
Ether misconception | New ScientistEther misconception | New Scientist
Polychlorinated diphenyl ethers - WikipediaPolychlorinated diphenyl ethers - Wikipedia
Polybrominated Diphenyl Ethers (PBDEs) | ToxFAQs™ | ATSDRPolybrominated Diphenyl Ethers (PBDEs) | ToxFAQs™ | ATSDR
Glycol ethers and acetates | Shell GlobalGlycol ethers and acetates | Shell Global
sulfur ether - Wiktionarysulfur ether - Wiktionary
Polybrominated Diphenyl Ethers (PBDEs) | Toxicological Profile | ATSDRPolybrominated Diphenyl Ethers (PBDEs) | Toxicological Profile | ATSDR
Marine Bacteria Produce Polybrominated Diphenyl Ethers (PBDEs)Marine Bacteria Produce Polybrominated Diphenyl Ethers (PBDEs)
Polybrominated diphenyl ethers (PBDEs) - SourceWatchPolybrominated diphenyl ethers (PBDEs) - SourceWatch
Occupational Exposure to Glycidyl Ethers (78-166) | NIOSH | CDCOccupational Exposure to Glycidyl Ethers (78-166) | NIOSH | CDC
Ether - AFI | Last.fmEther - AFI | Last.fm
f-ether on Spotifyf-ether on Spotify
dimethyl ether (CHEBI:28887)dimethyl ether (CHEBI:28887)
Ether 1Ether 1
Ether 13Ether 13
Ether by Mexeena on Apple MusicEther by Mexeena on Apple Music
Molecule Gallery - EthersMolecule Gallery - Ethers
Patent US3641104 - Cyano substituted perfluorovinyl ethers - Google PatentsPatent US3641104 - Cyano substituted perfluorovinyl ethers - Google Patents
ATSDR - Chemical Class - Nitrosamines/ethers/alcoholsATSDR - Chemical Class - Nitrosamines/ethers/alcohols
Rivals of Aether on SteamRivals of Aether on Steam
Gold Solutions - Applied Biophysics Aether Research LaboratoryGold Solutions - Applied Biophysics Aether Research Laboratory
Chapter 70.76 RCW Dispositions: POLYBROMINATED DIPHENYL ETHERS-FLAME RETARDANTSChapter 70.76 RCW Dispositions: POLYBROMINATED DIPHENYL ETHERS-FLAME RETARDANTS
Polyphenyl Ethers | Features | Apr 2002 | Photonics SpectraPolyphenyl Ethers | Features | Apr 2002 | Photonics Spectra
Ether | Define Ether at Dictionary.comEther | Define Ether at Dictionary.com
aggregated-ether-options - TechLibrary - Juniper Networksaggregated-ether-options - TechLibrary - Juniper Networks
OrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureHealth Care
EtherEthersEthyl EthersHalogenated Diphenyl EthersPhenyl EthersCrown EthersPhospholipid EthersGlyceryl EthersMethyl EthersEthylene GlycolsPolybrominated BiphenylsFlame RetardantsBis(Chloromethyl) EtherEthers, CyclicPlasmalogenstert-Butyl AlcoholVinyl CompoundsHydrocarbons, BrominatedMolecular StructureStereoisomerismAcetalsChromatography, GasCyclizationGas Chromatography-Mass SpectrometryGasolineAlkenesChromatography, Thin LayerBoranesSolventsEnvironmental PollutantsGlyceridesGlycolsMethoxyfluraneEstersEpoxy CompoundsAlcoholsFuransPropaneFatty AlcoholsMagnetic Resonance SpectroscopyPyran CopolymerSilanesDihematoporphyrin EtherBiodegradation, EnvironmentalAlkanesChloroformKetonesOximesPropylene GlycolsGuaifenesinButanesChemistryMass SpectrometryPlant ExtractsCissusChondrodysplasia Punctata, RhizomelicChemical PhenomenaHydrocarbons, HalogenatedPhospholipidsAnestheticsCatalysisEgtazic AcidSurface-Active AgentsStructure-Activity RelationshipBromineAcetatesPolyethylene GlycolsKineticsTeratogensAllyl CompoundsAgrocybeCyclopropanesAldehydesAlkynesPolychlorinated BiphenylsChromatography, High Pressure LiquidHematoporphyrinsPhosphinesPhenolsOrganosilicon CompoundsIndicators and ReagentsLipidsMethanol
PolymersCompoundsReactionSynthesisReactiveFormationEthylPBDEsDimethylCrown ethersArylVinyl etherAlbert Michelson and Edward MorleySolventGlycol ethersSweet oil ofColorlessBitcoinPhenyl etherLuminiferous etherSoluble2017SubstituentMoleculeOxidePBDEIUPACCyclicAtomsAlkyl groupsAtomFunctional groupFunctionalitiesBlockchainFormula
Polymers1
Compounds2
Reaction4
  • The Mukaiyama aldol addition is an organic reaction and a type of aldol reaction between a silyl enol ether and an aldehyde or formate. (freewheelings.com)
  • An iron‐catalyzed coupling reaction of O ‐acyloximes and O ‐benzoyl amidoximes with silyl enol ethers is reported. (freewheelings.com)
  • Silyl enol ethers are common reagents in organic synthesis as illustrated by the Mukaiyama aldol reaction: Vinyl acetate is an enol ester that is made on an industrial scale. (freewheelings.com)
  • A particular intriguing example involves a one‐pot synthesis of silyl enol ether 1j by means of a Diels−Alder reaction, subsequent nonaflation and a Heck reaction with tert‐butyl acrylate, furnishing the highly functionalised 1,3‐diene 30 in good overall yield. (freewheelings.com)
Synthesis3
  • Enol silyl ethers and their analogs are one of the most versatile substrate classes and enjoy widespread applications in organic synthesis (Fig. (freewheelings.com)
  • Yet there are no reports of broadly applicable, catalytic methods for the synthesis of chiral silyl enol ethers carrying latent functionalities useful for synthetic operations beyond the many possible reactions of the silyl enol ether moiety itself. (freewheelings.com)
  • Electrooxidative Coupling of Aromatics and Silyl Enol Ethers: Application to the Synthesis of Annulated Aromatics Jeffrey B. Sperry* Mand Dennis L. Wright Dartmouth College Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755 The preparation of annulated furan and benzene systems from a two-step conjugate addition, electrochemical annulation sequence has been … The use of silyl enol ethers as an enolate equivalent in Lewis acid-catalyzed aldol additions. (freewheelings.com)
Reactive1
  • Enol silyl ethers can be cleaved with nucleophiles such as MeLi, LiNH 2 or R 4 N + F-to give reactive enolates. (freewheelings.com)
Formation1
Ethyl11
PBDEs8
  • This fact sheet answers the most frequently asked health questions (FAQs) about polybrominated diphenyl ethers (PBDEs). (cdc.gov)
  • Polybrominated diphenyl ethers (PBDEs) are man-made chemicals found in plastics used in a variety of consumer products to make them difficult to burn. (cdc.gov)
  • Polybrominated diphenyl ethers (PBDEs) are flame-retardant chemicals that were added to plastics and foam products to make them difficult to burn. (cdc.gov)
  • Rats and mice that ate food with There are tests that can detect PBDEs in blood, body fat, decabromodiphenyl ether (one type of PBDE) throughout and breast milk. (cdc.gov)
  • Blood tests are the atoms than decabromodiphenyl ether are listed by the EPA as easiest and safest for detecting recent exposures to large not classifiable as to human carcinogenicity due to the lack amounts of PBDEs. (cdc.gov)
  • Polybrominated diphenyl ethers (PBDEs) are a class of brominated flame retardants , first produced commercially in the 1970s. (sourcewatch.org)
  • Polybrominated diphenyl ethers (PBDEs) are structurally similar to known human toxicants polybrominated biphenyls (PBBs), polychlorinated biphenyls (PCBs), dioxins and furans . (sourcewatch.org)
  • Polybrominated diphenyl ethers (PBDEs), a group of flame retardants, and perfluoroalkyl substances (PFASs) were analysed in serum samples of pregnant women from Denmark to provide information about their exposure and to study indications of common exposure pathways. (mendeley.com)
Dimethyl9
Crown ethers22
Aryl3
Vinyl ether3
  • 8. The polymer of claim 5 wherein the fluorovinyl ether is copolymerized with a fluoroalkyl vinyl ether having the structure CF 2 ═CFOR 2 f wherein R 2 f is selected from the group consisting of a trifluoromethyl group, a bromodifluoromethyl group, and a heptafluoropropyl group. (google.com)
  • 9. The polymer of claim 5 wherein the fluorovinyl ether is copolymerized with a fluoroalkyl vinyl ether, having the structure CF 2 ═CFOR 2 f wherein R 2 f is a C 1 -C 6 perfluoroalkyl group that is a perfluoro-2-propoxypropyl group. (google.com)
  • What made you want to look up vinyl ether ? (merriam-webster.com)
Albert Michelson and Edward Morley3
Solvent3
  • Diethyl ether is commonly used in chemistry labs as a solvent. (angelo.edu)
  • A simple and convenient synthetic protocol for the protection of hydroxyl groups as tetrahydropyranyl ethers as well as carbonyl functionalities as oxathioacetals and thioacetals has been achieved using a catalytic amount of silica-supported perchloric acid under solvent-free conditions. (organic-chemistry.org)
  • Tetrahydrofuran ( THF ) is another common ether solvent . (ucla.edu)
Glycol ethers7
Sweet oil of1
Colorless1
  • Hydroxypropyl starch ether mainly is a white or colorless powder characterized with a good level of fluidity. (openpr.com)
Bitcoin4
  • NEW YORK , July 19, 2018 /PRNewswire/ -- trueDigital Holdings ('TDH'), a leading developer of institutional-grade digital asset trading solutions, has partnered with 10 liquidity providers and contributors including Genesis Global Trading, XBTO Group, Circle, DV Chain, Hehmeyer and Altonomy to create the first market maker based Bitcoin and Ether pricing indices. (prnewswire.com)
  • The launch of the trueDigital Bitcoin and Ether reference rates sets a new standard for the digital asset market and allays common concerns about the robustness and lack of transparency inherent in retail exchange-based bitcoin pricing composites. (prnewswire.com)
  • Until just recently, consumers could only buy Ether (a form of cryptocurrency) with just Bitcoin (another type of crypto). (newsblaze.com)
  • Ether tokens were created during a crowdfunding drive that raised about $8 million worth of bitcoin. (wsj.com)
Phenyl ether1
Luminiferous ether3
Soluble2
20171
  • 2017. Toxicological profile for Polybrominated Diphenyl Ether. (cdc.gov)
Substituent2
  • If the ether is part of a more complex molecule, it is described as an alkoxy substituent, so -OCH 3 would be considered a " methoxy -" group. (wikipedia.org)
  • In more complicated ethers, the ether group is named as an alkoxy substituent, in which the 'yl' ending of alkyl groups is replaced by 'oxy. (angelo.edu)
Molecule3
  • The unusual combination of optical and thermal properties in polyphenyl ethers (PPE) is derived from their molecular structure, as demonstrated by this five-ring PPE molecule. (photonics.com)
  • Molecular recognitionThe size and shape of the cavity formed within a crown ether molecule confers selectivity for complementary ions and small molecules that fit it, like a lock and key. (newswise.com)
  • Because of the flexibility, a crown ether molecule can adjust the size and shape of its cavity to accommodate a range of sizes and shapes of guests, limiting the crown ether's selectivity. (newswise.com)
Oxide1
PBDE2
  • Based on this evidence, exposed to high levels of the chemicals, but cannot tell the the EPA has classified decabromodiphenyl ether as a exact amount or type of PBDE you were exposed to, or possible human carcinogen. (cdc.gov)
  • Several classes of emerging contaminants with endocrine disruptive properties were detected in appreciable concentrations, including polybrominated diphenyl ether ( PBDE ) flame retardants, nonylphenols (NPs) detergent breakdown products and the antibacterial agent triclosan . (sourcewatch.org)
IUPAC2
  • In the IUPAC nomenclature system, ethers are named using the general formula "alkoxyalkane" , for example CH 3 -CH 2 -O-CH 3 is methoxyethane . (wikipedia.org)
  • IUPAC rules are often not followed for simple ethers. (wikipedia.org)
Cyclic1
Atoms3
  • Since ethers do not have a hydrogen connected to the oxygen atoms, they are not capable of forming hydrogen bonds to each other. (angelo.edu)
  • In addition, the lone pairs on the oxygen atoms in the ether can complex with the magnesium atoms in the Grignard reagent, stabilizing the reagent somewhat. (angelo.edu)
  • The first number in the name of a crown ether refers to the number of atoms in the cycle, and the second number refers to the number of those atoms that are oxygen . (newworldencyclopedia.org)
Alkyl groups2
  • Ethers can again be classified into two varieties: if the alkyl groups are the same on both sides of the oxygen atom, then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. (wikipedia.org)
  • Simple ethers are named by naming the alkyl groups in alphabetical order and adding the word 'ether' to the end. (angelo.edu)
Atom4
  • An ether in which the oxygen atom is connected to two methyl groups. (ebi.ac.uk)
  • Ethers contain hydrocarbon groups connected by an oxygen atom. (cdc.gov)
  • This capability allows chemists to organize a collection of separately weak bonding interactions, such as the electrostatic bond between an ether oxygen atom and a metal ion, to achieve strong, selective binding. (newswise.com)
  • For example, the strength with which a crown ether binds a potassium atom is three times greater in its constrained, rigid state on graphene than in an unconstrained structure. (newswise.com)
Functional group1
Functionalities1
Blockchain3
  • The Securities and Exchange Commission appears to be interested in Binance's eponymous blockchain, 132% of ether wallets are in profit and the Bank of Japan is getting serious about CBDC R&D. (yahoo.com)
  • While the second-largest cryptocurrency is trading with only a relatively small price increase year-on-year, the number of profit-making or "in the money" ether addresses has more than doubled to 31.37 million from 13.5 million over that time, according to blockchain analytics firm IntoTheBlock. (yahoo.com)
  • Ether as a currency was created in 2014 in part as a mechanism to help fund the Ethereum Foundation, a group formed to help launch the Ethereum blockchain platform. (wsj.com)
Formula1
  • 260--465.6 2 Claims ABSTRACT OF THE DISCLOSURE Substituted perfiuorovinyl ethers having the formula CFFCFO(OF ),,-CN where n is from 2 to 12, preferably 2 to 4. (google.com)
Catalytic selective mono- and difluoroalkylation using fluorinated silyl enol ethers - Chemical Communications (RSC Publishing...
Catalytic selective mono- and difluoroalkylation using fluorinated silyl enol ethers - Chemical Communications (RSC Publishing... (pubs.rsc.org)
Kenny Smith Ethers Chris Webber - UPROXX
Kenny Smith Ethers Chris Webber - UPROXX (uproxx.com)
Ethylene Oxide|Glycol ethers|Block Polyethers|PFY oiling agent|Polysilicon cutting fluid|Surfactant Series|Medicine & Pesticide...
Ethylene Oxide|Glycol ethers|Block Polyethers|PFY oiling agent|Polysilicon cutting fluid|Surfactant Series|Medicine & Pesticide... (integralhorse.com)
Ethers | Imagine Self
Ethers | Imagine Self (imagineself.com)
Dirty Dozen Endocrine Disruptors | EWG
Dirty Dozen Endocrine Disruptors | EWG (ewg.org)
Dirty Dozen Endocrine Disruptors | EWG
Dirty Dozen Endocrine Disruptors | EWG (ewg.org)
Chemical compound - Alcohols and phenols | Britannica
Chemical compound - Alcohols and phenols | Britannica (britannica.com)
Reagent | chemistry | Britannica
Reagent | chemistry | Britannica (britannica.com)
BPA and other Cord Blood Pollutants | Pollution in Minority Newborns | EWG
BPA and other Cord Blood Pollutants | Pollution in Minority Newborns | EWG (ewg.org)
Emerging Contaminants | Mass.gov
Emerging Contaminants | Mass.gov (mass.gov)
Products | Dow Construction Chemicals
Products | Dow Construction Chemicals (dow.com)
On the basis of the functional groups listed in | bartleby
On the basis of the functional groups listed in | bartleby (bartleby.com)
Current Intelligence Bulletin 29: Glycidyl Ethers (79-104) | NIOSH | CDC
Current Intelligence Bulletin 29: Glycidyl Ethers (79-104) | NIOSH | CDC (cdc.gov)
Book Series: Studies in Organic Chemistry
Book Series: Studies in Organic Chemistry (elsevier.com)
Glycol Ethers 2-Methoxyethanol & 2-Ethoxyethanol (83-112) | NIOSH | CDC
Glycol Ethers 2-Methoxyethanol & 2-Ethoxyethanol (83-112) | NIOSH | CDC (cdc.gov)
Cognitive neuroepigenetics: the next evolution in our understanding of the molecular mechanisms underlying learning and memory?...
Cognitive neuroepigenetics: the next evolution in our understanding of the molecular mechanisms underlying learning and memory?... (nature.com)
NIOSHTIC-2 Publications Search - 00194546 - An exposure assessment of industries using ethylene glycol ethers.
NIOSHTIC-2 Publications Search - 00194546 - An exposure assessment of industries using ethylene glycol ethers. (cdc.gov)
Cellulose Ethers-HPMC/CMC/HEC/MC/EC of Manufacturer
Cellulose Ethers-HPMC/CMC/HEC/MC/EC of Manufacturer (celluloseether.com)
Image,Photo,Picture of Methyl Cellulose Ethers -Okorder.com
Image,Photo,Picture of Methyl Cellulose Ethers -Okorder.com (okorder.com)
Ashland | Cement & gypsum based dry mortars & ready to use plasters & joint compounds
Ashland | Cement & gypsum based dry mortars & ready to use plasters & joint compounds (ashland.com)
Alcohols & Phenols & Ethers FOB Price,Products,Suppliers,Manufacturers & Exporters Diretory
Alcohols & Phenols & Ethers FOB Price,Products,Suppliers,Manufacturers & Exporters Diretory (okchem.com)
2-Hydroxypropyl-.beta.-cyclodextrine ethers - Registration Dossier - ECHA
2-Hydroxypropyl-.beta.-cyclodextrine ethers - Registration Dossier - ECHA (echa.europa.eu)
July 07, 1883 - Scientific American
July 07, 1883 - Scientific American (scientificamerican.com)
Reactions of methylene with ethers. Part 2.-With ethyl methyl ether - Transactions of the Faraday Society (RSC Publishing)
Reactions of methylene with ethers. Part 2.-With ethyl methyl ether - Transactions of the Faraday Society (RSC Publishing) (pubs.rsc.org)
Zeitschrift für Naturforschung B
Zeitschrift für Naturforschung B (degruyter.com)
23 Toxic Chemicals You Come into Contact with on a Daily Basis | Best Life
23 Toxic Chemicals You Come into Contact with on a Daily Basis | Best Life (bestlifeonline.com)
6 hidden household toxins - protecting your pet | Animal Wellness Magazine
6 hidden household toxins - protecting your pet | Animal Wellness Magazine (animalwellnessmagazine.com)
Crown Ethers Flatten in Graphene for Strong, Specific Binding
Crown Ethers Flatten in Graphene for Strong, Specific Binding (newswise.com)
Elution - Wikipedia
Elution - Wikipedia (en.wikipedia.org)
Learn Organic Chemistry Nomenclature 1 dans l'App Store
Learn Organic Chemistry Nomenclature 1 dans l'App Store (itunes.apple.com)
Tetrahydrofuran - Wikipedia
Tetrahydrofuran - Wikipedia (en.wikipedia.org)
22 Harmful Chemicals in Personal Care Products | Organic Facts
22 Harmful Chemicals in Personal Care Products | Organic Facts (organicfacts.net)
INEOS Oxide Products
INEOS Oxide Products (ineos.com)