Furans
Dioxins
Cycloaddition Reaction
Cyclization
Anisoles
Benzamidines
Polychlorinated Biphenyls
Bromobenzenes
Rhodium
Stereoisomerism
Molecular Structure
Alkynes
Tetrachlorodibenzodioxin
Environmental Policy
Environmental Pollution
Environment
United States Environmental Protection Agency
Conservation of Natural Resources
Environmental Health
Water
Incineration
Word Association Tests
Phonetics
Speech Perception
Industrial Microbiology
Environmental Pollutants
Biofuels
Public Opinion
Public Health
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Gene Regulatory Networks
Interacting DNA-encoded regulatory subsystems in the GENOME that coordinate input from activator and repressor TRANSCRIPTION FACTORS during development, cell differentiation, or in response to environmental cues. The networks function to ultimately specify expression of particular sets of GENES for specific conditions, times, or locations.
Acetone
Mixed Function Oxygenases
Widely distributed enzymes that carry out oxidation-reduction reactions in which one atom of the oxygen molecule is incorporated into the organic substrate; the other oxygen atom is reduced and combined with hydrogen ions to form water. They are also known as monooxygenases or hydroxylases. These reactions require two substrates as reductants for each of the two oxygen atoms. There are different classes of monooxygenases depending on the type of hydrogen-providing cosubstrate (COENZYMES) required in the mixed-function oxidation.
Butylene Glycols
Oxygenases
Xanthine
A purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed)
Pentosyltransferases
Leishmania donovani
Equipment Contamination
Development of muscarinic analgesics derived from epibatidine: role of the M4 receptor subtype. (1/1563)
Epibatidine, a neurotoxin isolated from the skin of Epipedobates tricolor, is an efficacious antinociceptive agent with a potency 200 times that of morphine. The toxicity of epibatidine, because of its nonspecificity for both peripheral and central nicotinic receptors, precludes its development as an analgesic. During the synthesis of epibatidine analogs we developed potent antinociceptive agents, typified by CMI-936 and CMI-1145, whose antinociception, unlike that of epibatidine, is mediated via muscarinic receptors. Subsequently, we used specific muscarinic toxins and antagonists to delineate the muscarinic receptor subtype involved in the antinociception evoked by these agents. Thus, the antinociception produced by CMI-936 and CMI-1145 is inhibited substantially by 1) intrathecal injection of the specific muscarinic M4 toxin, muscarinic toxin-3; 2) intrathecally administered pertussis toxin, which inhibits the G proteins coupled to M2 and M4 receptors; and 3) s.c. injection of the M2/M4 muscarinic antagonist himbacine. These results demonstrate that the antinociception elicited by these epibatidine analogs is mediated via muscarinic M4 receptors located in the spinal cord. Compounds that specifically target the M4 receptor therefore may be of substantial value as alternative analgesics to the opiates. (+info)A comparison of an A1 adenosine receptor agonist (CVT-510) with diltiazem for slowing of AV nodal conduction in guinea-pig. (2/1563)
1. The purpose of this study was to compare the pharmacological properties (i.e. the AV nodal depressant, vasodilator, and inotropic effects) of two AV nodal blocking agents belonging to different drug classes; a novel A1 adenosine receptor (A1 receptor) agonist, N-(3(R)-tetrahydrofuranyl)-6-aminopurine riboside (CVT-510), and the prototypical calcium channel blocker diltiazem. 2. In the atrial-paced isolated heart, CVT-510 was approximately 5 fold more potent to prolong the stimulus-to-His bundle (S-H interval), a measure of slowing AV nodal conduction (EC50 = 41 nM) than to increase coronary conductance (EC50 = 200 nM). At concentrations of CVT-510 (40 nM) and diltiazem (1 microM) that caused equal prolongation of S-H interval (approximately 10 ms), diltiazem, but not CVT-510, significantly reduced left ventricular developed pressure (LVP) and markedly increased coronary conductance. CVT-510 shortened atrial (EC50 = 73 nM) but not the ventricular monophasic action potentials (MAP). 3. In atrial-paced anaesthetized guinea-pigs, intravenous infusions of CVT-510 and diltiazem caused nearly equal prolongations of P-R interval. However, diltiazem, but not CVT-510, significantly reduced mean arterial blood pressure. 4. Both CVT-510 and diltiazem prolonged S-H interval, i.e., slowed AV nodal conduction. However, the A1 receptor-selective agonist CVT-510 did so without causing the negative inotropic, vasodilator, and hypotensive effects associated with diltiazem. Because CVT-510 did not affect the ventricular action potential, it is unlikely that this agonist will have a proarrythmic action in ventricular myocardium. (+info)Relationships between environmental organochlorine contaminant residues, plasma corticosterone concentrations, and intermediary metabolic enzyme activities in Great Lakes herring gull embryos. (3/1563)
Experiments were conducted to survey and detect differences in plasma corticosterone concentrations and intermediary metabolic enzyme activities in herring gull (Larus argentatus) embryos environmentally exposed to organochlorine contaminants in ovo. Unincubated fertile herring gull eggs were collected from an Atlantic coast control site and various Great Lakes sites in 1997 and artificially incubated in the laboratory. Liver and/or kidney tissues from approximately half of the late-stage embryos were analyzed for the activities of various intermediary metabolic enzymes known to be regulated, at least in part, by corticosteroids. Basal plasma corticosterone concentrations were determined for the remaining embryos. Yolk sacs were collected from each embryo and a subset was analyzed for organochlorine contaminants. Regression analysis of individual yolk sac organochlorine residue concentrations, or 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQs), with individual basal plasma corticosterone concentrations indicated statistically significant inverse relationships for polychlorinated dibenzo-p-dioxins/polychlorinated dibenzofurans (PCDDs/PCDFs), total polychlorinated biphenyls (PCBs), non-ortho PCBs, and TEQs. Similarly, inverse relationships were observed for the activities of two intermediary metabolic enzymes (phosphoenolpyruvate carboxykinase and malic enzyme) when regressed against PCDDs/PCDFs. Overall, these data suggest that current levels of organochlorine contamination may be affecting the hypothalamo-pituitary-adrenal axis and associated intermediary metabolic pathways in environmentally exposed herring gull embryos in the Great Lakes. (+info)Oxidative bioactivation of the lactol prodrug of a lactone cyclooxygenase-2 inhibitor. (4/1563)
The lactol derivative of a lactone cyclooxygenase-2 inhibitor (DFU) was evaluated in vivo and in vitro for its potential suitability as a prodrug. DFU-lactol was found to be 10 to 20 times more soluble than DFU in a variety of aqueous vehicles. After administration of DFU-lactol at 20 mg kg-1 p.o. in rats, a Cmax of 7.5 microM DFU was reached in the plasma. After oral administration, the ED50s of DFU-lactol in the carrageenan-induced paw edema and lipopolysaccharide-induced pyresis assays in rats are comparable with the ED50s observed when dosing with DFU. Incubations of DFU-lactol with rat and human hepatocytes demonstrated that the oxidation of DFU-lactol can be mediated by liver enzymes and that a competing pathway is direct glucuronidation of the DFU-lactol hydroxyl group. Assays with subcellular fractions from rat liver indicated that most of the oxidation of DFU-lactol occurs in the cytosolic fraction and requires NAD(P)+. Human liver cytosol can also support the oxidation of DFU-lactol to DFU when NAD(P)+ is added to the incubations. Fractionation of human liver cytosolic proteins showed that at least three enzymes are capable of efficiently effecting the oxidation of DFU-lactol to DFU. Incubations with commercially available dehydrogenases suggest that alcohol and hydroxysteroid dehydrogenases are involved in this oxidative process. These data together suggest that lactols may represent useful prodrugs for lactone-containing drugs. (+info)Evolution of plant defense mechanisms. Relationships of phenylcoumaran benzylic ether reductases to pinoresinol-lariciresinol and isoflavone reductases. (5/1563)
Pinoresinol-lariciresinol and isoflavone reductase classes are phylogenetically related, as is a third, the so-called "isoflavone reductase homologs." This study establishes the first known catalytic function for the latter, as being able to engender the NADPH-dependent reduction of phenylcoumaran benzylic ethers. Accordingly, all three reductase classes are involved in the biosynthesis of important and related phenylpropanoid-derived plant defense compounds. In this investigation, the phenylcoumaran benzylic ether reductase from the gymnosperm, Pinus taeda, was cloned, with the recombinant protein heterologously expressed in Escherichia coli. The purified enzyme reduces the benzylic ether functionalities of both dehydrodiconiferyl alcohol and dihydrodehydrodiconiferyl alcohol, with a higher affinity for the former, as measured by apparent Km and Vmax values and observed kinetic 3H-isotope effects. It abstracts the 4R-hydride of the required NADPH cofactor in a manner analogous to that of the pinoresinol-lariciresinol reductases and isoflavone reductases. A similar catalytic function was observed for the corresponding recombinant reductase whose gene was cloned from the angiosperm, Populus trichocarpa. Interestingly, both pinoresinol-lariciresinol reductases and isoflavone reductases catalyze enantiospecific conversions, whereas the phenylcoumaran benzylic ether reductase only shows regiospecific discrimination. A possible evolutionary relationship among the three reductase classes is proposed, based on the supposition that phenylcoumaran benzylic ether reductases represent the progenitors of pinoresinol-lariciresinol and isoflavone reductases. (+info)Evidence that halogenated furanones from Delisea pulchra inhibit acylated homoserine lactone (AHL)-mediated gene expression by displacing the AHL signal from its receptor protein. (6/1563)
Acylated homoserine lactone (AHL)-mediated gene expression controls phenotypes involved in colonization, often specifically of higher organisms, in both marine and terrestrial environments. The marine red alga Delisea pulchra produces halogenated furanones which resemble AHLs structurally and show inhibitory activity at ecologically realistic concentrations in AHL bioassays. Evidence is presented that halogenated furanones displace tritiated OHHL [N-3-(oxohexanoyl)-L-homoserine lactone] from Escherichia coli cells overproducing LuxR with potencies corresponding to their respective inhibitory activities in an AHL-regulated bioluminescence assay, indicating that this is the mechanism by which furanones inhibit AHL-dependent phenotypes. Alternative mechanisms for this phenomenon are also addressed. General metabolic disruption was assessed with two-dimensional PAGE, revealing limited non-AHL-related effects. A direct chemical interaction between the algal compounds and AHLs, as monitored by 1H NMR spectroscopy, was shown not to occur in vitro. These results support the contention that furanones, at the concentrations produced by the alga, can control bacterial colonization of surfaces by specifically interfering with AHL-mediated gene expression at the level of the LuxR protein. (+info)NADH-quinone oxidoreductase: PSST subunit couples electron transfer from iron-sulfur cluster N2 to quinone. (7/1563)
The proton-translocating NADH-quinone oxidoreductase (EC 1.6.99.3) is the largest and least understood enzyme complex of the respiratory chain. The mammalian mitochondrial enzyme (also called complex I) contains more than 40 subunits, whereas its structurally simpler bacterial counterpart (NDH-1) in Paracoccus denitrificans and Thermus thermophilus HB-8 consists of 14 subunits. A major unsolved question is the location and mechanism of the terminal electron transfer step from iron-sulfur cluster N2 to quinone. Potent inhibitors acting at this key region are candidate photoaffinity probes to dissect NADH-quinone oxidoreductases. Complex I and NDH-1 are very sensitive to inhibition by a variety of structurally diverse toxicants, including rotenone, piericidin A, bullatacin, and pyridaben. We designed (trifluoromethyl)diazirinyl[3H]pyridaben ([3H]TDP) as our photoaffinity ligand because it combines outstanding inhibitor potency, a suitable photoreactive group, and tritium at high specific activity. Photoaffinity labeling of mitochondrial electron transport particles was specific and saturable. Isolation, protein sequencing, and immunoprecipitation identified the high-affinity specifically labeled 23-kDa subunit as PSST of complex I. Immunoprecipitation of labeled membranes of P. denitrificans and T. thermophilus established photoaffinity labeling of the equivalent bacterial NQO6. Competitive binding and enzyme inhibition studies showed that photoaffinity labeling of the specific high-affinity binding site of PSST is exceptionally sensitive to each of the high-potency inhibitors mentioned above. These findings establish that the homologous PSST of mitochondria and NQO6 of bacteria have a conserved inhibitor-binding site and that this subunit plays a key role in electron transfer by functionally coupling iron-sulfur cluster N2 to quinone. (+info)Role of metabolic activation in the pathogenesis of chemically induced pulmonary disease: mechanism of action of the lung-toxic furan, 4-ipomeanol. (8/1563)
Many xenobiotics produce hepatic injury due to their metabolism in the liver to highly reactive electrophile intermediates which form covalent conjugates with nucleophilic cellular constituents. This presentation describes studies indicating that the production of chemically reactive metabolites by pulmonary metabolism of xenobiotics can also play a fundamental role in the pathogenesis of chemically induced lung disease. (+info)
Furan 27.5 - Psynydebikes
2-Oxo-2,3-dihydrofuran-5-acetate
FURANS - English word
Bulk Manufacturer & Supplier of 2,4-dichloro-1-(dichloromethyl)benzene CAS:134-25-8 | Brenlabs.com
Chemical Database: Benzene, (dichloromethyl)- (EnvironmentalChemistry.com)
2S,5R)-5-(6-Aminopurin-9-yl)-2,5-dihydrofuran-2-yl]methanol | C10H11N5O2 - PubChem
PROCESS FOR THE PREPARATION OF NAPHTHALEN-2-YL-PYRAZOL-3-ONE INTERMEDIATES USEFUL IN THE SYNTHESIS OF SIGMA RECEPTOR INHIBITORS...
849035-65-0 | 1-[2-Chloro-4-methyl-5-(methylsulphonyl)phenyl]piperazine | Apollo Scientific
methylsulphonyl)benzene (CAS 3112-85-4) Market Research Report 2018
Dioxins and Furans | Environment | SGS
Oxidation of furan on well-characterized vanadium oxide catalysts<...
Cycloaddition reaction of furan with Si(100)-2×1 | [email protected]
Tire-derived fuel - Wikipedia
CAS 110-00-9 : FURAN (FURANE)
QAYBTII SADEXAAD EE DOODII MAXAAN KU MUTAYSTAY HEYBSOOCA DOOD FURAN | Toggaherers Blog
Synthesis of furan derivatives via cascade-type reactions catalyzed by solid acids
Tetrahydrofuran Manufacturer,Tetrahydrofuran Supplier,Exporter
United States Tetrahydrofuran Market Report 2021 : ReportsnReports
Kahr Research Group Publications 1986-1991
Dichloromethyl[2-(trichlorosilyl)ethyl]silane
Concanavalin A/bovine serum albumin-incorporated LA-conjugated Tetronic® 1107 micelles aggregates
CAS No.497-23-4,2(5H)-Furanone Suppliers,MSDS download
5-Fluoro-7-(methylsulphonyl)-1H-indole-2-carboxylic acid - Alfa Chemistry
APGC-MS/MS Investigation of a Complex Mixture of Polyhalogenated Dioxins and Furans (PXDD/Fs) Generated in Fire Debris : Waters
Dioxins & Furans Reference Materials | LGC Standards
BROMINATED DIOXIN/FURAN LABELED COMPOUNDS (13C12, 99%) - Creative Proteomics
中国科学院上海有机化学研究所机构知识库(SIOC OpenIR): A general and efficient synthesis of substituted furans and dihydrofurans via gold-catalyzed...
MODIFIED JIS LOW CONCENTRATION DIOXIN & FURAN CALIBRATION SOLN CS2L (UNLABELED/13C12, 99%) - Creative Proteomics
ChemInform Abstract: Synthesis of New 2- or 3-Deoxy Carbapyranoses from Furan.<span></span> | Odon Arjona; Gema Lorenzo; Rocio...
2-(4,4-Difluorobut-3-enylsulfanyl)furan | C8H8F2OS - PubChem
Risks for public health related to the presence of furan and methylfurans in food
Naphtho[1,2-b]furan - Alfa Chemistry
ChemIDplus - 125372-43-2 - VLTVCYQMCFCYBJ-UHFFFAOYSA-N - Naphtho(2,1-b)furan, 7-isothiocyanato-2-nitro- - Similar structures...
Furan Nooca Meegaarka
Furan Contamination News on Environmental XPRT
Tetrahydrofuran (THF) Market: Increasing Demand for PTMEG from Spandex Manufacturing Expected to Dri. - Free Online Library
Investigations on Cell Proliferation and Enzyme Induction in Male Rat Kidney and Female Mouse Liver Caused by Tetrahydrofuran :...
2-(furan-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 248924-59-6 Route Of Synthesis Synthetic Routes
Tetrahydrofuran fentanyl (hydrochloride)
Nomination Summary for Tetrahydrofuran (N79398)
Quantum Chemical Characterization of Hydrogen Bonding Sites in Three 4-(4-Halo-Phenyl)-6-(Furan-2-yl) Pyrimidin-2-Amine...
1-[4-(furan-2-yl)phenyl]ethanone 35216-08-1 H-NMR | C-NMR Spectral Analysis NMR Spectrum
Operation Green Rights: August 2012
Reverse dial rotation
KIT - Mitarbeiter
سعر وملعومات Zantac 300mg 20 f.c.tab
سعر وملعومات Gastproct 50mg/2ml 5 amp. for i.v/i.m inj
Phase i study of the halichondrin B analogue eribulin mesylate in combination with cisplatin in advanced solid tumors<...
DSpace at EWHA: Effects of dicarbonyl trapping agents, antioxidants, and reducing agents on the formation of furan and other...
Mechanistic Insight into Heterogeneous Hydrogenation of Furan Derivatives with the Use of Parahydrogen | Sciact - cris system
CAS No.88-14-2,2-Furoic acid Suppliers,MSDS download
Halaven Eribulin Mesylate 1mg Injection Exporter, Manufacturer
Eribulin mesylate: View Uses, Side Effects and Medicines, cost care | MHP.ooo
Ebunat 0.5mg/ml - Eribulin Mesylate Injection Manufacturer, Ebunat 0.5mg/ml - Eribulin Mesylate Injection Supplier,Exporter,...
Furfuryl Alcohol Market is Expected to Surpass US$ 1,493.7 Mn by 2028 | FMI Report - PharmiWeb.com
Catalysts | Free Full-Text | Conversion of Furans by Baeyer-Villiger Monooxygenases
buy
Furfuryl Alcohol FA
- high quality
Manufacturers,Suppliers and Exporters on weiku.com
buy
furfuryl alcohol 98 00 0
- high quality
Manufacturers,Suppliers and Exporters on weiku...
A theoretical analysis of the kinetics of the reaction of atomic bromine with tetrahydrofuran<...
Marine sponge derived eribulin in preclinical and clinical studies for cancer<...
A Randomized, Phase 2 Trial to Evaluate the Safety and Efficacy of Eribulin Mesylate in Combination With Atezolizumab Compared...
Eribulin mesylate (Halaven) geeft mediaan enkele maanden meer overall overleving bij weke delen tumoren, maar is nog lang geen...
2-Furoyl chloride - Wikipedia
Plus it
Lariciresinol - Health Articles
Buy Furfuryl Alcohol (For Synthesis) 40% discount @ ibuychemikals in India
Furfuryl Alcohol, 98%, ACROS Organics
| Fisher Scientific
Design and synthesis of sulfur cross-linked 1,3,4-oxadiazole-nitro(furan/thiophene)-propenones as dual inhibitors of...
Conversion of 5-(chloromethyl)-2-furaldehyde into 5-methyl-2-furoic acid and derivatives thereof - Patent # 8710250 -...
Estimating national dioxins and furans emissions, major sources, intake doses, and temporal trends in Iran from 1990-2010 |...
Application of Pd catalyzed alkylation: Synthesis of bicyclic furans, by Pasha Moeenuddin Khan
PQR | 7-methoxy-1-methyl-2-nitronaphtho[2,1-b]furan
China Cyclohexanone formaldehyde 37 soy isoflavone furan uses supplier & manufacturer | Zhejiang Brother Chemical Co.,Ltd
Relativistic effects on linear and non-linear polarizabilities of the furan homologues
A Thermodynamic Study on the Cationic Ring-Opening Polymerization of Tetrahydrofuran
Ethers, Cyclic | Profiles RNS
Monensin Sodium Salt Manufacturer,Monensin Sodium Salt Supplier
US4064145A - Production of tetrahydrofuran
- Google Patents
Tetrahydrofuran : propylene glycol | BioExpress
A phase III clinical study to compare the combination therapy of eribulin mesylate + trastuzumab + pertuzumab with paclitaxel...
Biomass pre-treatment for co-production of high-concentration C5- and C6-carbohydrates and their derivatives - Energy...
The Piancatelli rearrangement of non-symmetrical furan-2,5dicarbinols for the synthesis of highly functionalized...
ELECTRODE FORMING METHOD RELATING TO HEAT GENERATING FIXING BELT, HEAT GENERATING FIXING BELT AND FIXING APPARATUS - Patent...
Towards ocean based biorefinery | University of Bath
FDA-Approved Chemotherapy for Metastatic Breast Cancer | HALAVEN® (eribulin mesylate) Injection
HALAVEN® (eribulin mesylate) Injection: Treatment for Metastatic Breast Cancer (mBC)
JP4524111B2 - Method for producing HMG-CoA reductase inhibitor
- Google Patents
Eisai Announces Initiation of a Phase 3 Trial of Eribulin Mesylate Injection Versus Weekly Paclitaxel in First and Second Lines...
Study to Assess Safety and Preliminary Activity of Eribulin Mesylate in Pediatric Participants With Relapsed/Refractory...
Furanose | Article about Furanose by The Free Dictionary
2,5-Furandicarboxylic acid
Catalytic conversions of various furan derivatives[edit]. The third class includes reactions describing the synthesis of FDCA ... The potential applications of furan-based building blocks for polymer applications has been extensively reviewed by Gandini.[20 ... The second class of synthesis routes include the oxidation reactions of various 2,5-disubstituted furans utilizing a variety of ... Furan-2,5-dicarboxylic acid (FDCA) has been suggested as an important renewable building block because it can substitute for ...
Frank Westheimer
Kohler, E. P.; Westheimer, F. H.; Tishler, M. (February 1936). "Hydroxy Furans. I. Beta Hydroxy Triphenylfuran". Journal of the ...
Tetrahydrofurfuryl acetate
Maga, Joseph A.; Katz, Ira (May 1979). "Furans in foods". CRC Critical Reviews in Food Science and Nutrition. 11 (4): 355-400. ...
Winter service vehicle
Furan, Amy. "Dream Job: Snowplow Driver". salary.com. Archived from the original on 1 May 2007. Retrieved 23 April 2007.. ...
Tellurophenes
... furan. A variety of protocols for the synthesis of tellurophenes have been developed, such as metal-catalyzed cross coupling ... "A comparative study of the aromatic character of furan, thiophen, selenophen, and tellurophen". Journal of the Chemical Society ...
Oxanorbornadiene
2. Dien-Synthesen des Furans.)". Justus Liebig's Annalen der Chemie. 490 (1): 243-257. doi:10.1002/jlac.19314900110. Van Berkel ... 3-triazoles and furans. The intermediate triazolines avoid detection because of a very strong thermodynamic drive to collapse ... readily obtainable by a Diels-Alder cycloaddition between furans and acetylenedicarboxylates such as DMAD. OND-2,3- ...
Asymmetric hydrogenation
The asymmetric hydrogenation of furans and benzofurans has so far proven challenging. Some Ru-NHC complex catalyze asymmetric ... The asymmetric hydrogenation of furans and benzofurans As is the case with oxygen-containing heterocycles, the asymmetric ... Wysocki, Jędrzej; Ortega, Nuria; Glorius, Frank (2014). "Asymmetric Hydrogenation of Disubstituted Furans". Angewandte Chemie ... hydrogenations of benzofurans and furans. with high levels of enantioinduction. ...
Ether
The aromatic ethers include furans. Acetals (α-alkoxy ethers R-CH(-OR)-O-R) are another class of ethers with characteristic ...
Dioxins and dioxin-like compounds
TEFs exist for seven congeners of dioxins, ten furans and twelve PCBs. The reference congener is the most toxic dioxin TCDD ... WHO fact sheet Dioxins & Furans: The Most Toxic Chemicals Known to Science Synopsis on dioxins and PCBs. ... furans, and polychlorinated biphenyls as a function of age, body fat, smoking status, and breast-feeding". Environmental Health ... or furans. PCDFs are derivatives of dibenzofuran. There are 135 isomers; 10 have dioxin-like properties. Polychlorinated ...
List of cities, towns and villages in Markazi Province
Furan Gachlu , Garakan , Garmab , Gav Khaneh , Gavar , Gavi Cheshmeh , Gavjellu , Gazavand , Gazeran , Gazeran , Gaztaf-e Olya ...
Furfural
... is used to make other furan derivatives, such as furoic acid, via oxidation, and furan itself via palladium catalyzed ... Limpricht apparently thought that furan was cyclobutadiene to which a hydroxyl (OH) group was attached. Hence he named furan " ... Baeyer's proposed structures for furan appears on p. 1361. In 1870, the German chemist Heinrich Limpricht prepared furan by ... It has an aldehyde group attached to the 2-position of furan. It is a product of the dehydration of sugars, as occurs in a ...
Andert-et-Condon
It is watered by the Furans. In addition to the village, the commune has several hamlets: Gevrin, Andert, and les Barraques et ... Andert castle and Beauregard Manor overlook the road down to Contrevoz on the Furans. In 1838 on Andert bridge there was the ... The Chateau of Andert Park At the south-eastern tip of the commune is the Pont de Bognens medieval bridge across the Furans ...
Alison R. H. Narayan
Sherman, David H.; Houk, K. N.; Montgomery, John; Podust, Larissa M.; Li, Zhe; Furan, Lawrence R.; Yun-Fang Yang; Ramabhadran, ...
Al Sobotka
Furan, Amy (2006). "Dream Jobs: Zamboni Driver". Archived from the original on July 5, 2006. Retrieved April 3, 2007 - via ...
2-Methylfuran
2-METHYL-FURAN". Retrieved 2008-08-26. CS1 maint: discouraged parameter (link) "2-methyl furan". The Good Scents Company. ...
Perilla ketone
... is a natural terpenoid that consists of a furan ring with a six-carbon side chain containing a ketone functional ... Perilla: Botany, Uses and Genetic Resources Matsuura, Teruo (1957). "Natural furan derivatives. I. The synthesis of perilla ...
Dioxins and dioxin-like compounds
Toxic equivalence factors (TEFs) exist for seven congeners of dioxins, ten furans and twelve PCBs. The reference congener is ... Polychlorinated dibenzofurans (PCDFs), or furans. PCDFs are derivatives of dibenzofuran. There are 135 isomers, ten have dioxin ... in case of dioxins and furans, chlorine substitutes in positions 2,3,7, and 8.[2] Each additional non-lateral chlorine ... "Apparent half-lives of dioxins, furans, and polychlorinated biphenyls as a function of age, body fat, smoking status, and ...
Electronic waste
These noxious fumes include dioxins and furans. Bonfire refuse can be disposed of quickly into drainage ditches or waterways ... dioxins and furans into the environment. Researchers such as Brett Robinson, a professor of soil and physical sciences at ... dioxin and furans. Workers in formal industry are also exposed to more brominated flame-retardants than reference groups. For ...
2,3-Dihydrofuran
Wilson, Christopher L. (December 1947). "Reactions of Furan Compounds. VII. Thermal Interconversion of 2,3-Dihydrofuran and ...
Büchner-Curtius-Schlotterbeck reaction
Ramonczai, J.; L. Vargha (June 1950). "Studies of furan compounds. III. A new synthesis of furyl ketones". Journal of the ...
Arsole
Furan, an oxygen analog. Thiophene, a sulfur analog. Simple aromatic rings Varsol, a petroleum distillate with a boiling range ...
Ambenob Rural LLG
Furan / Sisiak 03. Korong / Opi 04. Kamba / Kuris 05. Siar / Wadan 06. Riwo / Nagada 07. Amron / Baitabag 08. Budad Haven 09. ...
Air pollution in Mexico City
... dioxins and furans; the strengthening of technical capacities of personnel and equipment in the inspection and surveillance ...
1,3-Diphenylisobenzofuran
W. Friedrichsen (1980), "Benzo[c]furans", Adv. Heterocycl. Chem., Advances in Heterocyclic Chemistry, 26, pp. 135-234, doi: ... 10.1016/S0065-2725(08)60141-5, ISBN 9780120206261 W. Friedrichsen (1999), "Recent advances in the chemistry of benzo[c]furans ...
Tetrahydro-2-furoic acid
"Palladium-catalyzed asymmetric hydrogenation of furan carboxylic acids". Journal of Catalysis. 219 (1): 52-58. doi:10.1016/ ... "Enantioselective homogeneous hydrogenation of monosubstituted pyridines and furans". Monatshefte für Chemie. 131 (12): 1335- ...
Load following power plant
Fu, Ran (10 February 2016). "2018 U.S. Utility-Scale PhotovoltaicsPlus-Energy Storage System Costs Benchmark" (PDF). NREL. ...
Heterocyclic compound
1832: Dobereiner produces furfural (a furan) by treating starch with sulfuric acid. 1834: Runge obtains pyrrole ("fiery oil") ... Included are pyridine, thiophene, pyrrole, and furan. Another large class of heterocycles are fused to benzene rings, which for ... "Design, synthesis of novel furan appended benzothiazepine derivatives and in vitro biological evaluation as potent VRV-PL-8a ... pyridine, thiophene, pyrrole, and furan are quinoline, benzothiophene, indole, and benzofuran, respectively. Fusion of two ...
Methoxsalen
They consist of coumarin annulated with furan. It can also be injected and used topically. Methoxsalen is extracted from Ammi ...
Tetrahydrofuran
Furan is thus derivable from renewable resources. Applications[edit]. Polymerization[edit]. In the presence of strong acids, ... THF can also be synthesized by catalytic hydrogenation of furan.[8][9] Certain sugars can be converted to THF,[citation needed] ...
4-Ipomeanol
These are the furan ring, the ketone group and the alcohol group. The furan ring is aromatic according to Hückel's rule, so the ... It consists of a furan ring, which is substituted at the third carbon of the furan ring with a pentanone containing a hydroxyl ... Furan is heterocyclic, which means that it is cyclic, but one or more of the ring atoms is not a carbon atom. In the case of ... A furan ring is a five-membered aromatic ring consisting of one oxygen atom and four carbon atoms; a pentanone is a ketone ...
Fluorinated Furans and Benzofurans | SpringerLink
... and application of furans and benzofurans bearing a fluorine atom and a trifluoromethyl group are reviewed. ... Lyalin VV, Grigorash RV, Alekseeva LA, Yagupolskii LM (1975) Mono(trifluoromethyl)furans and bis(trifluoromethyl)furans. Russ J ... Wilson WS, Warrener RN (1972) A mild retro-[π4S+π2S] cleavage route to furans and fulvenes. J Chem Soc Chem Commun 211-212 ... Palladium-catalyzed alkenylation of fluoro-substituted furans via C-H activation to form tetrasubstituted furans. Tetrahedron ...
furans
-
European Environment Agency
Dioxins, Furans, coplanar polychlorinated biphenyls (PCBs) Laboratory Capacity | CDC
Body burden levels of dioxin, furans, and PCBs among frequent consumers of Great Lakes sport fish. The Great Lakes Consortium. ... Table of laboratory methods panels for Dioxins, Furans, coplanar polychlorinated biphenyls (PCBs). Chemical. Specimen Type. ... Biomonitoring Factsheet: Dioxins, Furans and Dioxin-Like Polychlorinated Biphenyls. National Report on Human Exposure to ... On the isolation of polychlorinated dibenzo-p-dioxins and furans from serum samples using immunoaffinity chromatography prior ...
IDLH Value Profile: Furan | NIOSH | CDC
The purpose of this technical report is to present the IDLH value for furan (CAS® #110-00-9). ... The purpose of this technical report is to present the IDLH value for furan (CAS® #110-00-9). The scientific basis, toxicologic ... Immediately Dangerous to Life or Health (IDLH) Value Profile: Furan. ...
Furan - Wikipedia
Furan is used as a starting point for other speciality chemicals. The name "furan" comes from the Latin furfur, which means ... Furan is therefore listed as a possible human carcinogen. BS 4994 - Furan resin as thermoset FRP for chemical process plant ... Many routes exist for the synthesis of substituted furans. Furan is aromatic because one of the lone pairs of electrons on the ... Hydrogenation of furans sequentially affords dihydrofurans and tetrahydrofurans. In the Achmatowicz reaction, furans are ...
Dioxins and Furans : Waters
Furan (disambiguation) - Wikipedia
Furan, the chemical industrial compound Polychlorinated dibenzofurans, an unintentional contaminant byproduct of furans Furan ( ... river) in France Furan, Iran, a village in Markazi Province, Iran Nitrofurantoin, by the trade name Furan This disambiguation ... page lists articles associated with the title Furan. If an internal link led you here, you may wish to change the link to point ...
RhymeZone: furan related words
Dioxins and Furans | Environment | SGS
SGS dioxin and furan analysis can accurately measure trace quantities to improve your site safety. Find out more. ... Toxic dioxins and furans can accumulate through industrial processes. ... Environment Dioxins and Furans. Dioxins and furans are carcinogenic and so are some of the most regulated environmental ... Home › Environment › Air, Noise, Odor and Vibration › Laboratory Analysis › Specialty Analyses › Dioxins and Furans ...
Furans - Heterocyclic Building Blocks | Sigma-Aldrich
Learn More about Furans
furans.html>Synthesis of Furans ... Furan derivatives have been found to be inhibitors of biofilm formation for several bacterial species, as well as possess ... An iodinated lipophilic furan derivative is widely used in the treatment of ventricular and arterial fibrillation. These ... The furan ring system is the basic skeleton of numerous compounds possessing cardiovascular activities. ...
furans.html>Synthesis of Furans ... Furan derivatives have been found to be inhibitors of biofilm formation for several bacterial species, as well as possess ... An iodinated lipophilic furan derivative is widely used in the treatment of ventricular and arterial fibrillation. These ... The furan ring system is the basic skeleton of numerous compounds possessing cardiovascular activities. ...
Environmental Health Perspectives - Dioxins and Furans
EHP is pleased to present the abstracts from the 29th Annual Scientific Conference of the International Society for Environmental Epidemiology (ISEE), held in Sydney, Australia, 24-28 September 2017. The conference was hosted by The University of Sydney and cosponsored by the Woolcock Institute of Medical Research, with the theme "Healthy Places, Healthy People-Where Are the Connections?". ...
Furan, 2-nonanoyl
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 ...
Furan, 2-methyl
Furan, 2-propyl
Furan - definition of furan by The Free Dictionary
furan synonyms, furan pronunciation, furan translation, English dictionary definition of furan. n. 1. A colorless, volatile, ... Related to furan: furan resin. fu·ran. (fyo͝or′ăn′, fyo͝o-răn′). n.. 1. A colorless, volatile, heterocyclic organic compound, C ... Furan, which is possibly carcinogenic, usually appears in products that have been thermally processed.. Furan caused by ... Furan - definition of furan by The Free Dictionary https://www.thefreedictionary.com/furan ...
Furans | IPEN
Dioxins and Furans Monitoring (Monitoring and Testing) ...
Results for dioxins and furans monitoring equipment from CarboTech, Fluepac, Biotox and other leading brands for monitoring and ... ENVEA - Model Amesa-D - Dioxins & Furans Permanent Sampler. Continuous dioxin and furan emission monitoring by long-term ... Dioxins and Furans Monitoring equipment for Monitoring and Testing in Canada In Canada Available in Canada Near Canada ... furans (PCDF) and other persistent organic contaminant (POPs). AMESA-D is the most utilized dioxin monitoring ... ...
Furan - Wikipedia
The name "furan" comes from the Latin furfur, which means bran.[5] The first furan derivative to be described was 2-furoic acid ... Synthesis of furansEdit. The Feist-Benary synthesis is a classic way to synthesize furans, although many syntheses have been ... For other uses, see Furan (disambiguation).. Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ... Hydrogenation of furans sequentially affords dihydrofurans and tetrahydrofurans.. *In the Achmatowicz reaction, furans are ...
NHANES 2003-2004:
Dioxins, Furans, & Coplanar PCBs Data Documentation, Codebook, and Frequencies
Synthesis and scavenging role of furan fatty acids | PNAS
2005) Furan fatty acids: Occurrence, synthesis, and reactions. Are furan fatty acids responsible for the cardioprotective ... Furan fatty acids. Rachelle A. S. Lemke, Amelia C. Peterson, Eva C. Ziegelhoffer, Michael S. Westphall, Henrik Tjellström, ... Furan fatty acids. Rachelle A. S. Lemke, Amelia C. Peterson, Eva C. Ziegelhoffer, Michael S. Westphall, Henrik Tjellström, ... 2011) Furan fatty acid as an anti-inflammatory component from the green-lipped mussel Perna canaliculus. Proc Natl Acad Sci USA ...
Techniques for Measurement and Removal of Dioxins and Furans - 1st Edi
This book is a well organised treatise on identification and measurement of dioxins and furan in the environment. It focuses on ... Source and Formation of Dioxins and Furans. Global Contamination and Movement of Dioxins and Furans in Environment. Health ... Analytical Method for Dioxins and Furans. Development of Removal Techniques for Dioxins and Furans. References. ... This book is a well organised treatise on identification and measurement of dioxins and furan in the environment. It focuses on ...
Catalysts | Free Full-Text | Conversion of Furans by Baeyer-Villiger Monooxygenases
Altogether, our study shows that BVMOs can be employed for the selective oxidation of furans. ... were selected for studying their biocatalytic potential in converting furfural and some other furans. While BVMOs are usually ... can be used as biocatalysts for the selective oxidation of several furans, including 5-(hydroxymethyl) furfural (HMF) and ... Various furans are considered as valuable platform chemicals as they can be derived from plant biomass. Yet, for their ...
Furan Contamination News on Environmental XPRT
Get the latest furan contamination news on Environmental XPRT, the worlds largest environmental industry marketplace and ... Keenan is known for his skills in risk assessment of PCBs, dioxins, furans, chromium, and mercury and for the development of ... The sediments are contaminated with high levels of dioxins and furans, chlorobenzenes, metals, and other materials. On June 27 ...
Furan - Substance Information - ECHA
Furan - Registration Dossier - ECHA
log Octanol-water partition coefficient [furan]: 1.34. Key value for chemical safety assessment. Log Kow (Log Pow):. 1.34. ... Pennakem (2011), Safety Data Sheet: Furan, Company Safety Data Sheet, Penn A Kem LLC 3324 Chelsea Avenue Memphis, TN 38108, ... of Furans, QSAR Model Reporting Format, PFA.257.000.001, Reconsile. ...
Isolation and Characterization of Bacteria That Use Furans as the Sole Carbon Source | SpringerLink
P. putida ALS1267 was the most tolerant to furans and tolerated 17 mM furfural or 195 mM furoate before its growth rate was ... Wang, X., Miller, E. N., Yomano, L. P., Shanmugam, K. T., & Ingram, L. O. (2012). Increased furan tolerance in Escherichia coli ... Isolation and Characterization of Bacteria That Use Furans as the Sole Carbon Source. ...
Change in dioxin and furan emissions
-
European Environment Agency
Dioxins, Furans, PCBs (contain phenyl rings of carbon atoms) | Chemical Classifications | Toxic Substance Portal | ATSDR
Furans have one or two phenyl rings connected to a furan ring. PCBs have two phenyl rings attached at one point. One or more ... Dioxins, Furans, PCBs (contain phenyl rings of carbon atoms). Dioxins, furans, and polychlorinated biphenyls (PCBs) are a class ... Dioxins and dioxin-like furans have no known commercial or natural use. They are produced primarily during the incineration or ...
Furan in food - EFSA confirms health concerns | European Food Safety
Consumer exposure to furan and methylfurans in food could lead to possible long-term liver damage. The most exposed group of ... Reducing furan exposure. Furans form from a variety of substances naturally present in food, including vitamin C, carbohydrates ... Potential health risks linked to furan. EFSA carried out this assessment following its monitoring of furan levels in food and ... The level of furan in toast increases with toasting time and with the degree of browning, albeit toast is a less important ...
DioxinsSynthesisCompoundsDioxinDerivativesFurfuralDerivativePolymersPhenylHeterocyclic organic compoundMethylCarcinogenicAminoFurfuryl alcoholPyrrolePyridineExposureResinNaphthoColorlessMethanolThiopheneFatty acidsCompoundPhenolBiofuelsCarcinogenConcentrationsOxidationDisambiguationPurityEFSAFuraneVolatileBiomassSpecialityReferencesLevelsRatsDieneSuppliers
Dioxins24
- Dioxins and furans are carcinogenic and so are some of the most regulated environmental contaminants. (sgs.com)
- Produced inadvertently by industrial processes such as waste incineration, chemical manufacturing and paper bleaching, dioxins and furans can be found in the air, in water and contaminated soil. (sgs.com)
- High-resolution mass spectrometry is the only legally accepted analytical technique for quantifying dioxins and furans. (sgs.com)
- The process of smashing and burning the plastic casing and cables, to extract the metals, releases dangerous chemicals found within the plastics, such as brominated flame retardants, and creates highly toxic by-product chemicals like brominated and chlorinated dioxins and furans. (ipen.org)
- The AMESA-D utilizes the water cooled probe method with Isokinetic sampling system coupled with XAD-II adsorbent cartridge for Long-term sampling of dioxins (PCDD), furans (PCDF) and other persistent organic contaminant (POPs). (environmental-expert.com)
- Together with the polychlorinated dioxins and furans, these two special classes of PCBs are often referred to as "dioxin-like" chemicals because they act in the body through a similar mechanism. (cdc.gov)
- This book is a well organised treatise on identification and measurement of dioxins and furan in the environment. (routledge.com)
- This book provides a tool for today's environmental researchers by focusing on an integrated approach to managing environmental pollution problems due to dioxins and furans. (routledge.com)
- The overall objective of this book is not simply to provide a general reference, but to serve as a resource for developing approaches to managing environmental pollution problems due to dioxins and furans. (routledge.com)
- Source and Formation of Dioxins and Furans. (routledge.com)
- Global Contamination and Movement of Dioxins and Furans in Environment. (routledge.com)
- Health Effects of Dioxins and Furans. (routledge.com)
- Analytical Method for Dioxins and Furans. (routledge.com)
- The sediments are contaminated with high levels of dioxins and furans, chlorobenzenes, metals, and other materials. (environmental-expert.com)
- Dioxins, furans, and polychlorinated biphenyls (PCBs) are a class of similar chlorinated aromatic organic compounds. (cdc.gov)
- Dioxins and dioxin-like furans have no known commercial or natural use. (cdc.gov)
- Please explore our range of standards for dioxins and furans below and get in touch if you have questions about how we can support you in your analytical testing. (lgcstandards.com)
- We identify and quantify ultra-trace levels of Dioxins, Furans and Dioxin-like PCB congeners and other persistent organic pollutants (POPS) in liquid, solid, air and biota. (maxxam.ca)
- In selecting a 'supplier' for analysis of dioxins and furans and dioxin-like PCB congeners, it is important to realize that services differ from lab to lab in terms of analytical solutions provided, instrumentation used and the expertise of the people involved in the project. (maxxam.ca)
- As part of environmental health studies in Escambia and Santa Rosa counties, UWF's CEDB found that blue crabs and oysters collected from western Escambia Bay locations had relatively higher loads (TEQs) of dioxins/furans and dioxin-like PCBs than samples collected from eastern Escambia Bay. (uwf.edu)
- Recent findings indicate that mullet and large mouth bass collected from Lower Escambia River contain relatively high concentrations of total PCBs and dioxins/furans/dioxin-like PCBs. (uwf.edu)
- Because of the paucity of information on sediment contamination in the Escambia Bay system, notably the limited spectrum of past analyses for PCB congeners and none for dioxins/furans, it is difficult to ascertain the geographical extent and levels of these toxic chemicals in the bay. (uwf.edu)
- This project will determine the levels of PCBs (complete congener profiles) and dioxins/furans in sediment samples taken at 20 locations in the Escambia Bay, including some sites in the Lower Escambia River. (uwf.edu)
- This study provides suggestive evidence that average serum concentrations of dioxins, furans, and PCBs are decreasing over time among residents of this town. (biomedcentral.com)
Synthesis19
- Synthesis, reactions, and application of furans and benzofurans bearing a fluorine atom and a trifluoromethyl group are reviewed. (springer.com)
- Considerable attention has been focused on the synthesis of furan derivatives and screening them for pharmacological activity. (sigmaaldrich.com)
- The Feist-Benary synthesis is a classic way to synthesize furans, although many syntheses have been developed. (wikipedia.org)
- One of the simplest synthesis methods for furans is the reaction of 1,4-diketones with phosphorus pentoxide (P2O5) in the Paal-Knorr synthesis. (wikipedia.org)
- Many routes exist for the synthesis of substituted furans. (wikipedia.org)
- The reaction product is a mixture of isomers with preference for the endo isomer: Diels-Alder reaction of furan with arynes provides corresponding derivatives of dihydronaphthalenes, which are useful intermediates in synthesis of other polycyclic aromatic compounds. (wikipedia.org)
- Diels-Alder reaction of furan with arynes provides corresponding derivatives of dihydronaphthalenes , which are useful intermediates in synthesis of other polycyclic aromatic compounds . (wikipedia.org)
- This paper reports on the occurrence and synthesis of a newly discovered class of furan-containing fatty acid. (pnas.org)
- A new strategy for cyclopenta[ b ]furan synthesis mediated by hypervalent iodine(III) has been described. (mdpi.com)
- Chuang, T.-H. Hypervalent Iodine(III)-Induced Domino Oxidative Cyclization for the Synthesis of Cyclopenta[ b ]furans. (mdpi.com)
- Synthesis, anthelmintic and antiacetylcholinesterase activity of newer furan derivatives. (ijpsonline.com)
- The speciality of furan polymers lies in the chemistry of furan ring which allows electrophilic substitution, incorporation of photosensitive chromophores, synthesis of conjugated oligomers and polymers, and functionalization via Diels Alder (DA) reaction as diene. (hb.se)
- An efficient CuI-catalyzed coupling cyclization of gem -difluoroalkenes with active methylene carbonyl compounds such as 1,3-dicarbonyl compounds, acetoacetonitrile, and phenylsulfonylacetone enables the synthesis of 2,3,5-trisubstituted furans with the assistance of a base. (organic-chemistry.org)
- Very good isolated yields, and excellent functional group compatibility make this transformation a powerful tool for the synthesis of various furans. (organic-chemistry.org)
- Palladium catalysis enables a highly efficient synthesis of a wide range of 2,5-disubstituted furans in very good yields from enyne acetates in the presence of a Lewis acid. (organic-chemistry.org)
- Chapter 1 reviews the recent advances in the field of palladium catalyzed synthesis of bicyclic furan analogs and provides a mechanistic explanation for these processes. (usf.edu)
- Chapter 2 describes synthesis of new optically pure isoxazoline-2-oxide and furan analogs using Pd(0) catalyzed intramolecular cyclizations. (usf.edu)
- Khan, Pasha Moeenuddin, "Application of Pd catalyzed alkylation: Synthesis of bicyclic furans, isoxazolines and new cyclopentane amino acid analogs" (2008). (usf.edu)
- Penn furan and furfural based solvents offer unique capabilities as starting materials for the synthesis of pharmaceutical, agricultural, and industrial chemicals. (chempoint.com)
Compounds11
- Furans, consisting of a five-membered aromatic ring with one oxygen atom, are an important class of heterocyclic compounds that possess important biological properties. (sigmaaldrich.com)
- The furan ring system is the basic skeleton of numerous compounds possessing cardiovascular activities. (sigmaaldrich.com)
- Chemical compounds containing such rings are also referred to as furans. (wikipedia.org)
- In the Achmatowicz reaction, furans are converted to dihydropyran compounds. (wikipedia.org)
- Zhu, "Catalytic pyrolysis of cellulose with sulfated metal oxides: a promising method for obtaining high yield of light furan compounds," Bioresource Technology, vol. (thefreedictionary.com)
- It also provides evidence that furan-containing fatty acids scavenge toxic reactive oxygen species, suggesting a previously unnoticed role for this class of compounds in bacteria and other cells. (pnas.org)
- Here, we demonstrate a previously unreported ability of the photosynthetic bacterium Rhodobacter sphaeroides to produce furan-containing fatty acids (Fu-FAs), an important, yet poorly understood, class of compounds. (pnas.org)
- Furan and the related compounds 2- and 3-methylfurans are chemical contaminants that naturally form during heated food processing, including cooking. (europa.eu)
- Effect of lignin-derived and furan compounds found in lignocellulosic hydrolysates on biomethane production. (biomedsearch.com)
- Such hydrolysates are rich in xylose but also contain lignin polymers or oligomers as well as phenolic and furan compounds, such as syringaldehyde, vanillin, HMF, furfural. (biomedsearch.com)
- Agirrezabal-Telleria, I., Gandarias, I. and Arias, P.L. (2014) Heterogeneous Acid-Catalysts for the Production of Furan-Derived Compounds (Furfural and Hydroxymethylfurfural) from Renewable Carbohydrates A Review. (scirp.org)
Dioxin8
- Body burden levels of dioxin, furans, and PCBs among frequent consumers of Great Lakes sport fish. (cdc.gov)
- Call SGS today for a dioxin and furan analysis to ensure your site safety. (sgs.com)
- Our dioxin and furan testing can identify where toxic emissions are occurring and help to improve the safety of your operations. (sgs.com)
- We also monitor dioxin and furan levels in food and animal feed. (sgs.com)
- Fully accredited at local and international level, we are recognized as one of the world's leading and most reliable laboratories for dioxin and furan testing. (sgs.com)
- Continuous dioxin and furan emission monitoring by long-term sampling. (environmental-expert.com)
- For references , please go to https://www.eea.europa.eu/data-and-maps/daviz/eionet/sandbox/LOT2%20-%20Daviz%20testing%20environment/change-in-dioxin-furan-emissions or scan the QR code. (europa.eu)
- Wood ducks were sensitive to dioxin and furan contamination, and we recommend it as an indicator species for monitoring biological impacts from these contaminants. (usgs.gov)
Derivatives7
- Furan derivatives have been found to be inhibitors of biofilm formation for several bacterial species, as well as possess quorum-sensing inhibitory activities. (sigmaaldrich.com)
- Spectroscopic and thermodynamic properties of furan derivatives. (nist.gov)
- An approach to utilize biomass requires its conversion to various furan derivatives, which can potentially substitute petroleum precursors in producing chemicals, polymers and fuels. (aiche.org)
- The objective of this work is to gain mechanistic understanding into the aldose conversion to platform furan derivatives using a Lewis acid with a Brønsted acid. (aiche.org)
- Furan and its derivatives sometimes form when amino acids or sugars are broken down by the heat of cooking," explains Dr. Yaylayan. (bio-medicine.org)
- In the present study, a series of N-substituted-5-(furan-2-ylmethylene)thiazolidine-2,4-dione derivatives were synthesized and characterized by 1H-NMR, 13C-NMR and mass spectra. (deepdyve.com)
- A series of 3-[5-nitro(furan/thiophene)-2-yl]-1-aryl-3-(5-aryl-1,3,4-oxadiazol-2-ylthio)prop-2-en-1-one derivatives was synthesized and studied with the aim of developing dual inhibitors of multidrug-resistant tuberculosis and inflammation. (springer.com)
Furfural5
- Industrially, furan is manufactured by the palladium-catalyzed decarbonylation of furfural, or by the copper-catalyzed oxidation of 1,3-butadiene: In the laboratory, furan can be obtained from furfural by oxidation to 2-furoic acid, followed by decarboxylation. (wikipedia.org)
- In the laboratory, furan can be obtained from furfural by oxidation to 2-furoic acid, followed by decarboxylation . (wikipedia.org)
- Here we demonstrate that Baeyer-Villiger monooxygenases (BVMOs) can be used as biocatalysts for the selective oxidation of several furans, including 5-(hydroxymethyl) furfural (HMF) and furfural. (mdpi.com)
- Phenylacetone monooxygenase (PAMO) and a mutant thereof (PAMO M446G ) were selected for studying their biocatalytic potential in converting furfural and some other furans. (mdpi.com)
- P. putida ALS1267 was the most tolerant to furans and tolerated 17 mM furfural or 195 mM furoate before its growth rate was reduced by 50 % in a defined medium. (springer.com)
Derivative8
- An iodinated lipophilic furan derivative is widely used in the treatment of ventricular and arterial fibrillation. (sigmaaldrich.com)
- The first furan derivative to be described was 2-furoic acid, by Carl Wilhelm Scheele in 1780. (wikipedia.org)
- As part of an investigative effort to find promising anticancer agents from marine-derived fungi [6-8], the chemical investigation of a strain of Aspergillus niger (BRF074), recovered from sediments of the Northeast Brazilian coast, yielded the new furan ester derivative (1) and the cyclopeptides malformins A (2) and C (3) [9] (Figure 1). (thefreedictionary.com)
- This has motivated us to focus on developing novel biocomposites from furan derivative and tung oil based bioresin using cellulose nanofibres as the reinforcement. (hb.se)
- 4. The process of claim 1 , wherein the furan-based polymer is derived from 2,5-furan dicarboxylic acid or a derivative thereof and a C2 to C12 aliphatic diol. (sumobrain.com)
- 5. The process of claim 1 , wherein the furan-based polymer is derived from 2,5-furan dicarboxylic acid or a derivative poly(trimethylene furandicarboxylate) thereof and 1 ,3-propanediol. (sumobrain.com)
- 6. The process of claim 1 , wherein the furan-based polymer is a polymer blend comprising 0.1 -99.9% by weight of poly(trimethylene furandicarboxylate) and 99.9-0.1 % by weight of a poly(alkylene terephthalate), based on the total weight of the polymer blend, wherein the poly(alkylene terephthalate) comprises monomeric units derived from terephthalic acid or a derivative thereof and a C2-C12 aliphatic diol. (sumobrain.com)
- 7. The process of claim 1 , wherein the furan-based polymer is a polymer blend comprising 0.1 -99.9% by weight of poly(trimethylene furandicarboxylate) and 99.9-0.1 % by weight of a poly(alkylene furandicarboxylate), based on the total weight of the polymer blend, wherein the poly(alkylene furandicarboxylate) comprises monomeric units derived from 2,5-furan dicarboxylic acid or a derivative thereof and a C2-C12 aliphatic diol. (sumobrain.com)
Polymers4
- The insertion of furan groups into polymers has been explored as a strategy that combines the search for high-performance materials with the search for the development of biobased materials, since these groups have shown to be able to confer good thermal and mechanical properties to the materials and can be obtained from renewable raw materials such as hemicellulose. (thefreedictionary.com)
- However, the drawbacks associated with furan polymers (brittleness, lack of reliable data on mechanical properties, and inefficient condensation polymerization) have limited its application in large industries. (hb.se)
- Compared with PET, furan polymers like polyethylene furanoate (PEF) offer improved gas barrier properties. (sustainablebrands.com)
- Firms pursuing furan polymers use biobased 2,5-furandicarboxylic acid (FDCA) in place of terephthalic acid in the polyester's backbone. (sustainablebrands.com)
Phenyl3
- Furans have one or two phenyl rings connected to a furan ring. (cdc.gov)
- In the title compound, C 21 H 14 F 2 O 2 S, the dihedral angles between the mean plane [r.m.s. deviation = 0.007 (2) Å] of the benzo-furan ring system and the pendant 4-fluoro-phenyl and phenyl rings are 5.93 (9) and 80.23 (5)°, respectively. (iucr.org)
- In November 2016, the EMCDDA and Europol examined the available information on a new psychoactive substance N -phenyl- N -[1-(2-phenylethyl)piperidin-4-yl]-furan-2-carboxamide, commonly known as furanylfentanyl, through a joint assessment. (europa.eu)
Heterocyclic organic compound2
- Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen atom. (wikipedia.org)
- Furan is a heterocyclic organic compound produced in the chemical manufacturing industry and also found in a broad range of food products, including infant formulas and baby foods. (nih.gov)
Methyl5
- The dissociation of 2-methyl furan at high temperatures has been studied in a combined experimental and theoretical approach to elucidate the details of this multi-channel unimolecular reaction. (rsc.org)
- This was resolved by increasing the rate of loss of an H-atom from the methyl group in 2-methyl furan by a factor of 2-4. (rsc.org)
- In the central fragment, consisting of two fused tetra-hydro-furan rings, one O atom and its two adjacent C atoms, a methyl-ene and a bridgehead C atom, are disordered over two sets of sites with an occupancy ratio of 0.735 (9):0.265 (9). (iucr.org)
- 1. 2-methyl furan is widely used as solvent. (guidechem.com)
- 2. Our 2- methyl furan annual output is 5000MT. (guidechem.com)
Carcinogenic1
- Furan , which is possibly carcinogenic, usually appears in products that have been thermally processed. (thefreedictionary.com)
Amino10
- Furans form from a variety of substances naturally present in food, including vitamin C, carbohydrates, amino acids, unsaturated fatty acids and carotenoids. (europa.eu)
- The study, published in the October, 2004 issue of Journal of Agricultural and Food Chemistry , shows how food-based amino acids and sugars break down when heated to produce furan. (bio-medicine.org)
- The report generally describes 2-amino-1-furan-2-yl-ethanol, examines its uses, production methods, patents. (marketpublishers.com)
- 2-amino-1-furan-2-yl-ethanol manufacturers and suppliers with contacts and product range are mentioned in the study. (marketpublishers.com)
- Furthermore, 2-amino-1-furan-2-yl-ethanol prices in regional markets can be found in the report with regards to countries and companies. (marketpublishers.com)
- The report also focuses on 2-amino-1-furan-2-yl-ethanol consumers by providing data on companies that use it. (marketpublishers.com)
- 2-AMINO-1-FURAN-2-YL-ETHANOL (CAS 2745-22-4) Market Research Report 2017 contents were worked out and placed on the website in December, 2017. (marketpublishers.com)
- Please note that 2-AMINO-1-FURAN-2-YL-ETHANOL (CAS 2745-22-4) Market Research Report 2017 is a half ready publication and contents are subject to change. (marketpublishers.com)
- We provide independent and unbiased information on manufacturers, prices, production news and consumers for the global and regional (North America, Asia and Europe) market of {[(benzyloxy)carbonyl]amino}(furan-2-yl)acetic acid. (reportsnreports.com)
- The main emphasis of this work is to utilize Pd catalyzed allylic alkylation to synthesize new heterocycles including furans, isoxazolines and new cyclopentane amino-acid analogs in an enantioselective manner. (usf.edu)
Furfuryl alcohol1
- Furan resin is condensate of furfuryl alcohol which is synthesized from agricultural or forest wastes containing pentoses. (hb.se)
Pyrrole1
- Pyrrole can be prepared industrially by reacting furan and ammonia in the presence of solid acid catalysts, such as SiO2 and Al2O3. (wikipedia.org)
Pyridine2
- The crystal and molecular structure of 6-bromo-2-(furan-2-yl)-3-(prop-2-ynyl)-3H-imidazo[4,5-b]pyridine (C 13 H 8 BrN 3 O) has been investigated from single crystal X-ray diffraction data. (hindawi.com)
- In this work, we have synthesized the 3-prop-2-ynyl analogue which is 6-bromo-2-(furan-2-yl)-3-(prop-2-ynyl)-3H-imidazo[4,5-b]pyridine ( 1 ) (Scheme 1 ). (hindawi.com)
Exposure11
- Exposure to furan at doses about 2000 times the projected level of human exposure from foods increases the risk of hepatocellular tumors in rats and mice and bile duct tumors in rats. (wikipedia.org)
- Consumer exposure to furan and methylfurans in food could lead to possible long-term liver damage. (europa.eu)
- EFSA carried out this assessment following its monitoring of furan levels in food and assessing consumer exposure. (europa.eu)
- As did the Joint FAO/WHO Expert Committee on Food Additives [JECFA], we concluded that the level of exposure to furan in food indicates a human health concern. (europa.eu)
- Although the average intake of foods containing furan indicates a low health concern for most consumers, for high consumers exposure is up to three times what would be considered of low concern for public health. (europa.eu)
- There are some knowledge gaps about the toxicity of furan and methylfurans and about exposure to them. (europa.eu)
- Dr Knutsen said: "Our opinion describes how cooking practices could reduce dietary exposure to furan and methylfurans, bearing in mind that consumers are exposed to them in a variety of foods. (europa.eu)
- The level of furan in toast increases with toasting time and with the degree of browning, albeit toast is a less important contributor to overall furan exposure. (europa.eu)
- calculating exposure requires consideration of both furan levels, and the amounts of food that consumers eat. (corn.org)
- The agency also notes that their estimates of consumer exposure to furan is "well below what FDA expects would cause harmful effects. (corn.org)
- It has been estimated that coffee consumption may be the highest contributor to furan exposure from dietary sources among adults. (oreilly.com)
Resin1
- BS 4994 - Furan resin as thermoset FRP for chemical process plant equipments Furanocoumarin Furanoflavonoid Furanose Furantetracarboxylic acid Simple aromatic rings Furan fatty acids Tetrahydrofuran Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). (wikipedia.org)
Naphtho1
- The ceric ammonium nitrate oxidation of the furo(3,2-b]naphtho[2,l-d]furan-8(9H)- ones (5c,5d) gave the rearranged hemiketals (llc,lld) in 72-76% yield. (auckland.ac.nz)
Colorless1
- Furan is a colorless, flammable, highly volatile liquid with a boiling point close to room temperature. (wikipedia.org)
Methanol7
- The ' Global and Chinese Tetrahydro-2-Furan Methanol Industry, 2011-2021 Market Research Report ' is a professional and in-depth study on the current state of the global Tetrahydro-2-Furan Methanol industry with a focus on the Chinese market. (marketresearch.com)
- The report provides key statistics on the market status of the Tetrahydro-2-Furan Methanol manufacturers and is a valuable source of guidance and direction for companies and individuals interested in the industry.Firstly, the report provides a basic overview of the industry including its definition, applications and manufacturing technology. (marketresearch.com)
- Through the statistical analysis, the report depicts the global and Chinese total market of Tetrahydro-2-Furan Methanol industry including capacity, production, production value, cost/profit, supply/demand and Chinese import/export. (marketresearch.com)
- The report then estimates 2016-2021 market development trends of Tetrahydro-2-Furan Methanol industry. (marketresearch.com)
- In the end, the report makes some important proposals for a new project of Tetrahydro-2-Furan Methanol Industry before evaluating its feasibility. (marketresearch.com)
- Overall, the report provides an in-depth insight of 2011-2021 global and Chinese Tetrahydro-2-Furan Methanol industry covering all important parameters. (marketresearch.com)
- 5.2 Market Competition of Tetrahydro-2-Furan Methanol Industry by Country (USA, EU, Japan, Chinese etc. (marketresearch.com)
Thiophene1
- The thiophene formation reaction of 1,4-diketones with Lawesson's reagent also forms furans as side products. (wikipedia.org)
Fatty acids2
- We propose that furan-containing fatty acids like 19Fu-FA can act as a membrane-bound scavenger of 1 O 2 , which is naturally produced by integral membrane enzymes of the R. sphaeroides photosynthetic apparatus. (pnas.org)
- It also identifies other food components, such as vitamin C and polyunsaturated fatty acids, which may produce furan as an unwanted by-product of cooking, bottling or canning food products. (bio-medicine.org)
Compound2
- Furan may refer to: Furan, the chemical industrial compound Polychlorinated dibenzofurans, an unintentional contaminant byproduct of furans Furan (river) in France Furan, Iran, a village in Markazi Province, Iran Nitrofurantoin, by the trade name Furan This disambiguation page lists articles associated with the title Furan. (wikipedia.org)
- Furan is a highly volatile compound present in many foods and drinks as a result of thermal treatment during processing. (oreilly.com)
Phenol1
- Furan itself was first prepared by Heinrich Limpricht in 1870, although he called it "tetraphenol" (as if it were a four-carbon analog to phenol, C6H6O). (wikipedia.org)
Biofuels1
- Avantium, which spun-off from Shell in 2000, successfully completed an engine test to demonstrate the potential of its furan-based biofuels, or "furanics. (greencarcongress.com)
Carcinogen1
- Furan is therefore listed as a possible human carcinogen. (wikipedia.org)
Concentrations1
- Different preparation methods for coffee result in different losses of furan concentrations. (europa.eu)
Oxidation1
- Altogether, our study shows that BVMOs can be employed for the selective oxidation of furans. (mdpi.com)
Disambiguation1
- For other uses, see Furan (disambiguation) . (wikipedia.org)
Purity2
- Furans or All Furans to refine by category, grade, purity, and various physical properties. (sigmaaldrich.com)
- TIANFUCHEM-- 4282-32-0 --High purity Dimethyl Furan-2,5-dicarboxylate factory price price,buy Formaldehyde,Formaldehyde supplier-Henan Tianfu Chemical Co., Ltd. (lookchem.com)
EFSA1
- Furan in food - EFSA confirms health conce. (europa.eu)
Furane2
- Information provided on Furan (furane) (110-00-9) is for reference only and is subject to change. (caslab.com)
- Columbia Analytical may or may not test for the presence of 'Furan (furane)' CAS: 110-00-9 . (caslab.com)
Volatile2
- Furan is present in coffee as part of the volatile aroma components generated during roasting of green coffee beans. (oreilly.com)
- Normally, furan is a volatile chemical which tends to quickly evaporate. (bio-medicine.org)
Biomass2
- Various furans are considered as valuable platform chemicals as they can be derived from plant biomass. (mdpi.com)
- This increased understanding of the transformation of DMF and ethylene to p -xylene will aid in the development of a variety of renewable aromatics from biomass derived furans. (umass.edu)
Speciality1
- Furan is used as a starting point for other speciality chemicals. (wikipedia.org)
References1
- For references , please go to https://www.eea.europa.eu/help/glossary/eea-glossary/furans or scan the QR code. (europa.eu)
Levels4
- Research has indicated that coffee made in espresso makers, and coffee made from capsules contains more furan than that made in traditional drip coffee makers, although the levels are still within safe health limits. (wikipedia.org)
- for example levels of 2-methylfuran in coffee can be four times higher than furan. (europa.eu)
- The authors completely ignored the realities of sweetener science: any caloric sweetener substituted for high fructose corn syrup in a sweetened fruit juice would likely produce comparable levels of furans, including the two simple sugars found in apple juice and apple cider," stated Audrae Erickson, president, Corn Refiners Association. (corn.org)
- From roasting to the cup, furan levels decrease because of its high volatility and low water solubility. (oreilly.com)
Rats2
Diene1
- Furan serves as a diene in Diels-Alder reactions with electron-deficient dienophiles such as ethyl (E)-3-nitroacrylate. (wikipedia.org)
Suppliers1
- It captures 3-[5-(3-hydroxy-propyl)-furan-2-yl]-propan-1-ol market trends, pays close attention to 3-[5-(3-hydroxy-propyl)-furan-2-yl]-propan-1-ol manufacturers and names suppliers. (marketpublishers.com)