• Previously, we reported that a mixture of CLA isomers improved glucose tolerance in ZDF rats and activated peroxisome proliferator-activated receptor (PPAR)-γ response elements in vitro. (diabetesjournals.org)
  • Recently, we reported that a mixture of dietary CLA isomers normalized impaired glucose tolerance and prevented/delayed the development of hyperglycemia in obese ZDF rats ( 4 ). (diabetesjournals.org)
  • This novel and improved deconvolution method allows high-throughput, quantitative analysis of isobars from unresolved chromatographic peaks, and accurate quantification of isomers or isobars in a complex mixture. (ideaconnection.com)
  • This invention provides algorithms and equations for the deconvolution and accurate quantitation of isomers and isobars present in an unresolved mixture. (ideaconnection.com)
  • Octylphenol, isomer mixture (CAS 27193-28-8) Market Research Report 2018 aims at providing comprehensive data on octylphenol, isomer mixture market globally and regionally (Europe, Asia, North America, Latin America etc. (marketpublishers.com)
  • It captures octylphenol, isomer mixture market trends, pays close attention to octylphenol, isomer mixture manufacturers and names suppliers. (marketpublishers.com)
  • Besides, the report provides octylphenol, isomer mixture prices in regional markets. (marketpublishers.com)
  • In addition to the above the report determines octylphenol, isomer mixture consumers. (marketpublishers.com)
  • Octylphenol, isomer mixture (CAS 27193-28-8) Market Research Report 2018 contents were worked out and placed on the website in March, 2018. (marketpublishers.com)
  • Please note that Octylphenol, isomer mixture (CAS 27193-28-8) Market Research Report 2018 is a half ready publication and contents are subject to change. (marketpublishers.com)
  • In order to increase the efficiency of the herbicides, and reduce dosage and side-effects, it is desirable to use the R isomer rather than the racemic mixture. (google.com)
  • This selective esterification can be carried out in an organic solvent, because stereospecific lipases can function in essentially anhydrous organic media to preferentially catalyze the esterification of one optical isomer of a racemic mixture of 2-halopropionic acids. (google.com)
  • As determined by high performance liquid chromatography, it was found that the E isomer was preferentially metabolized when the parent mixture was used. (aacrjournals.org)
  • The kinetics of disappearance of the Z isomer during metabolism was identical to that for the reequilibration of the Z isomer to the mixture of isomers in the absence of a metabolizing system. (aacrjournals.org)
  • No. 5,665,772, SDZ-RAD exists as a mixture containing about 95 wt % of Isomer B and 30 wt % of Isomer C (the oxepane isomer). (google.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 Farnesol, mixture of isomers. (reportsnreports.com)
  • however, because of molecular symmetry, the 16 theoretical isomers are reduced to a mixture of 10 optical and geometric isomers. (asahq.org)
  • Unfortunately, the other four isomers could not be synthesized individually or separated from the atracurium mixture. (asahq.org)
  • Another way to say this is that two compounds with the same molecular formula , but different functional groups, are functional isomers. (princeton.edu)
  • Depending on how the atoms are arranged, it can represent two different compounds dimethyl ether CH 3 -O-CH 3 or ethanol CH 3 CH 2 -O-H. Dimethyl ether and ethanol are functional isomers . (princeton.edu)
  • A striking example of the different properties that constitutional isomers may have is found in the C 21 H 30 O 2 compounds progesterone and Δ 1 -tetrahydrocannabinol (THC). (msu.edu)
  • 5. Product according to claim 1 further characterized in that said "entangled" sample, comprising said excited nuclei, is in the form of alloys, mixtures, or chemical compounds incorporating a proportion of said excited nuclei from one or several aforesaid excited isomer nuclides. (freepatentsonline.com)
  • The compounds 1-butyne and 1,3-butadiene are structural isomers because they both have four carbon atoms and six hydrogen atoms but different arrangements of atoms and types of bonds. (coursehero.com)
  • Constitutional isomers are different compounds with different physical properties. (gradesaver.com)
  • Isomers are compounds whose molecular formulas are the same but chemical structures are different. (study.com)
  • Constitutional isomers are compounds where the atoms are connected or bonded differently. (study.com)
  • The concentration of aromatic compounds, such as naphthalenes, phenanthrenes, dibenzothiophenes and their structural isomers are at present attracting increasing attention as maturity indicators for coals and shale source rocks. (thefreedictionary.com)
  • Only the R optical isomers of these compounds are biologically active. (google.com)
  • For urine samples matrix compounds present in the final extract caused decreased retention of the isomers on the chiral stationary phase and a lack of chromatographic resolution. (wur.nl)
  • Compounds which are position isomers (compounds having the same radicals in physically different positions on the same nucleus) or homologs (compounds differing regularly by the successive addition of the same chemical group, e.g., by -CH 2 - groups) are generally of sufficiently close structural similarity that there is a presumed expectation that such compounds possess similar properties. (bitlaw.com)
  • Prior art structures do not have to be true homologs or isomers to render structurally similar compounds prima facie obvious. (bitlaw.com)
  • The court held that although the prior art compounds were not true homologs or isomers of the claimed compounds, the similarity between the chemical structures and properties is sufficiently close that one of ordinary skill in the art would have been motivated to make the claimed compounds in searching for new pesticides. (bitlaw.com)
  • Each molecule blend, each dimer and isomer , will have different properties. (wordnik.com)
  • Changing the shape of the molecule does not produce a different isomer. (asenseofwonderfilm.com)
  • Also in general, how can one come up with all the isomers for a molecule? (asenseofwonderfilm.com)
  • Two molecules are cis − trans isomers if they have the same molecular formula and the same bond structure but the atoms differ in position around a rigid, or fixed, part of the molecule. (coursehero.com)
  • The difference between the two is that the cis isomer is a polar molecule and has its functional groups on the same side of its carbon chain, whereas the trans isomer is nonpolar and has its functional groups on opposite sides of the carbon chain. (coursehero.com)
  • Jointly with a stimulated breakup of the molecule by choosing a (simple or composite) driving coordinate at an adequate level of theory, the approach still offers a near automated tool for locating structural isomers along the optimized reaction coordinate for stimulated evolution so obtained. (springer.com)
  • The position of an oxygen-hydrogen group relative to the carbon ring determines whether the molecule is the alpha or beta isomer of glucopyranose. (sciencephoto.com)
  • The larger the molecule and more branched it is, the greater the number of isomers you can produce. (study.com)
  • The trans isomer is non-polar, and the bulky CH 3 groups alternate, giving more space in the molecule. (study.com)
  • The ingenuity and effective logic that enabled chemists to determine complex molecular structures from the number of isomers, the reactivity of the molecule and of its fragments, the freezing point, the empirical formula, the molecular weight, etc., is one of the outstanding triumphs of the human mind. (todayinsci.com)
  • It is an extension of the theory of asymmetry without being a direct consequence of it: for the conviction that the geometrical structure of the molecule even for optical isomers exercises such a great influence on the chemical affinities, in my opinion could only be gained by new actual observations. (todayinsci.com)
  • Using solid phase microextraction-gas chromatography-electron capture detection to monitor NEtFOSA disappearance, and liquid chromatography-tandem mass spectrometry to monitor product formation, we showed that, in general, human microsomes and CYP isozymes transformed the branched isomers more rapidly than linear NEtFOSA. (mendeley.com)
  • Analysis of isobars and isomers by tandem mass spectrometry is complicated by the similarity between their mass spectra and often requires extensive chromatographic separation in order to eliminate mutual interference, and many methods for the separation of structural isomers are not compatible for quantitative analysis. (ideaconnection.com)
  • While these data are suggestive that the relatively high abundance of branched PFOS isomers present in some humans, or wildlife, may be explained by substantial exposure to PFOS-precursors, in vivo studies with other relevant PFOS-precursors are warranted to validate this as a biomarker of exposure source. (mendeley.com)
  • 2010). Therefore, concentrations of linear PFOA (n-PFOA), sum of branched isomers of PFOA (Sb-PFOA, branched PFOA isomers), linear PFOS (n-PFOS), and sum of perfluoromethylheptane sulfonate isomers (Sm-PFOS, monomethyl branched PFOS isomers) were measured in serum collected from eligible participants aged 12 years and older from NHANES 2013-2014. (cdc.gov)
  • All of these are configurational isomers, except for the cis and trans isomers of 2-pentene, which are geometrical isomers of each other. (reference.com)
  • However, the trans-10 cis-12 CLA isomer alone is known to have some adverse effects, such as, fatty liver formation, insulin resistance, etc. which can be corrected by combining with the cis-9 trans-11 CLA isomer, which is known to improve insulin sensitivity as well as fatty liver formation, "wrote the researchers. (wordnik.com)
  • BACKGROUND: Cis-urocanic acid (cis-UCA), formed from the naturally occurring trans-isomer in the epidermis on ultraviolet (UV) radiation, initiates some of the changes leading to UV-induced immunosuppression, but its role in cutaneous carcinogenesis has not been fully investigated. (biomedsearch.com)
  • Would you like to know how to spot a cis-isomer or a trans-isomer? (study.com)
  • The percentage of total cis/trans CLA isomers slightly decreased in irradiated samples, while the relative proportion of total trans,trans isomers slightly increased. (biomedsearch.com)
  • Trans -isomers of cytokinins (CK) are thought to predominate and have greater biological activity than corresponding cis -isomers in higher plants. (plantphysiol.org)
  • tRNA-bound CK are predominantly cis -isomers, whereas the large majority of studies to date have reported that free CK are predominantly or exclusively trans- isomers. (plantphysiol.org)
  • rX complex, is usually accepted as the dominant reaction pathway [4,23- but at the same time a similar reaction can take place with the corresponding cis-isomer , which is especially important for chelating ligands, where the formation of trans-[PdL. (thefreedictionary.com)
  • Fermented to the same high quality as that available from Japan, the product is a "natural," all-trans CoQ10 with no cis-isomer impurities. (thefreedictionary.com)
  • Concerning the stereoselectivity of glucuronidation, cis-isomers were glucuronidated faster than trans-isomers (15). (thefreedictionary.com)
  • The isomers are denoted by defining the absolute stereochemistry (R or S) at C-1 of the tetra-hydropapaverine ring and the relative cis or trans geometry of the bulky dimethoxybenzyl and alkyester groups at C-1 and N-2, respectively. (asahq.org)
  • corresponding to about 50-55% Cis-Cis, 35-38% Cis-Trans, and 6-7% Trans-Trans isomers, respectively. (asahq.org)
  • Isomer-specific MRM transitions allowed effective differentiation of neutral glycan isomers as well as sulfated isomeric structures, where the sulfate was retained on the fragment ions. (gu.se)
  • Structures of the glycan isomers present in each fraction were determined by one- and two-dimensional H-1 NMR spectroscopy techniques. (rti.org)
  • Despite its significance, our understanding is limited, in part due to the inherent difficulty in studying these branched, multi-isomer structures. (gu.se)
  • Often, there are only minor differences in the structures of the molecules, and the isomers therefore exhibit similar properties. (newworldencyclopedia.org)
  • A structural isomer is one of two or more molecules that have the same molecular formula but different bond structures. (coursehero.com)
  • The dependence of the XPS spectra on the structures of the seven C 80 molecules is imperfect, while the NEXAFS spectra show strong dependence on the seven fullerene molecules, so the NEXAFS spectra can be employed to identify all of the studied isomers. (rsc.org)
  • Isomers having the same empirical formula but different structures are not necessarily considered equivalent by chemists skilled in the art and therefore are not necessarily suggestive of each other. (bitlaw.com)
  • While the excitation energy of the first isomer of 212-Bi was confirmed, the second isomer was observed at 1478(30) keV. (wikipedia.org)
  • Mana alpha 1,2 (Gal alpha 1,3)Man alpha 1,2Mannitol (Gemmill and Trimble (1999) Glycobiology, 9, 507-515), The second isomer (g(2), 15%) is the partially processed Glc(2)Man(9)GlcNAc intermediate. (rti.org)
  • A stereospecific lipase is used to catalyze selectively the esterification of one optical isomer of racemic 2-halopropionic acid. (google.com)
  • The esterified optical isomer can then be separated readily from the unesterified optical isomer to provide either one of the optical isomers. (google.com)
  • Once separated, the esterified isomer can be used as such or hydrolyzed to yield the counterpart optical isomer of the 2-halopropionic acid. (google.com)
  • Its chemical properties resemble those of other ethers, rather than the properties of the above alcohol isomers. (newworldencyclopedia.org)
  • This makes it an ether , not an alcohol, as it lacks a hydroxyl group , and has chemical properties more similar to other ethers than to either of the above alcohol isomers. (wikidoc.org)
  • 2007). The structural isomer patterns of perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS) in humans may be useful for understanding routes and sources of exposure (Benskin et al. (cdc.gov)
  • The isomers for the molecular formula C3H8O include methoxyethane, propan-1-ol and propan-2-ol. (reference.com)
  • Only one isomer of phenol or hydroxybenzene exists but cresol or methylphenol has three isomers where the additional methyl group can be placed on three different positions on the ring. (princeton.edu)
  • Xylenol has one hydroxyl group and two methyl groups and a total of 6 isomers exist. (princeton.edu)
  • There is, however, another isomer of C 3 H 8 O which has significantly different properties: Methyl ethyl ether ( III ). (newworldencyclopedia.org)
  • Theobromine is found in chocolate , but if one of the two methyl groups is moved to a different position on the two-ring core, the isomer is theophylline, used as a bronchodilator. (newworldencyclopedia.org)
  • I drew it out and it has the same amount of hydrogens and carbons (obviously because they're both 5 and so it must have 12 hydrogens) and the methyl groups just add a methyl group onto it, and so still the longest chain is 5, so yes it is an isomer of it. (yahoo.com)
  • Theobromine , found in chocolate , is a vasodilator with some effects in common with caffeine , but if one of the two methyl groups is moved to a different position on the two-ring core, the isomer is theophylline , which has a variety of effects, including bronchodilation and anti-inflammatory action. (wikidoc.org)
  • Well, in the cis isomer, both methyl (CH 3 ) groups are on the same side, so they draw more electrons to it, forming a slight dipole. (study.com)
  • Cell-free extracts from xylem tissue yielded three monoterpene synthases which together account for the monoterpene isomer and enantiomer content of the turpentine of this tissue. (nih.gov)
  • Chardonnay, Gewürztraminer, Muscat, Pinot gris, Riesling, Sauvignon blanc, Torrontes, and Viognier in two vintages by Headspace solidphase microextraction multidimensional gas chromatography mass spectrometry (HS-SPME-MDGC-MS). Results obtained from general linear models and discriminant analysis showed significant differences for the isomer profiles and enantiomer fractions among the eight grape varieties and four wine styles. (mdpi.com)
  • These results provide an overview of the monoterpene isomers of wide varietal wines, and support that isomer profiles and enantiomer fractions could differentiate our wines by varietal and wine style. (mdpi.com)
  • Topology differences and accessible Cu( II ) centers in isomers of [Cu 2 L] n were evaluated for their porous properties towards CO 2 and their abilities to transform CO 2 into value added chemicals under ambient conditions. (rsc.org)
  • PATIENTS/METHODS: UCA isomers were determined by high-performance liquid chromatography analysis in samples from the outer arm (photoexposed site) and buttock (non-photoexposed site) obtained from 20 patients and 19 controls during the winter period (October to April), and from five patients and 11 controls during the summer period (June to September). (biomedsearch.com)
  • Total [beta]-carotene concentration and the concentration of some [beta]-carotene cis-isomers were measured spectrophotometrically and by high-performance liquid chromatography, respectively. (thefreedictionary.com)
  • These two are considered functional group isomers because cyclohexane is a cycloalkane and hex-1-ene is an alkene . (princeton.edu)
  • Functional characterization of synthetic leukotriene B and its stereochemical isomers. (rupress.org)
  • The carbon K-shell (1s) X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy of the seven isolated-pentagon-rule (IPR) isomers of fullerene C 80 have been calculated by means of density functional theory (DFT) theoretically. (rsc.org)
  • 1 The benefits of using the ACQUITY UPLC M-Class System with ion mobility mass spectrometry (IM-MS) to authenticate and routinely screen ginsenoside isomers in functional food products has also been previously reported. (waters.com)
  • We show that it is possible to manipulate the synthesis conditions to favor one isomer over another yielding MOFs with either an lvt or nbo topology. (rsc.org)
  • The peptide RHDSGY, a fragment of the human β-amyloid Zn-binding site, and its isomers RH(D-Asp)SGY and RH(β-Asp)SGY have been obtained as amides by means of solid-phase synthesis and analyzed by HPLC and various mass spectrometric methods. (springer.com)
  • The problem of low yield of the RHDSGY peptide and its isomers attributed to 9-fluorenylmethoxycarbonyl (Fmoc)-amino acids and/or formation of such side-products as RH(β-Asp)SGY (or RHDSGY during synthesis of RH(β-Asp)SGY) and RH(Asp-imide) SGY was solved via selection of individual reagents for removal of Fmoc groups from α-amino groups of the growing peptide chain. (springer.com)
  • Glucose and fructose are isomers of each other. (everything2.com)
  • Here, our aim was to elucidate the effect(s) of specific CLA isomers on whole-body glucose tolerance, insulin action in skeletal muscle, and expression of genes important in glucose and lipid metabolism. (diabetesjournals.org)
  • Thus, the aims of this work were to determine 1 ) which CLA isomer(s) is responsible for the antidiabetic effects, 2 ) if the CLA-induced antidiabetic effects are due to a reduction in food intake, 3 ) whether CLA exerts an antidiabetic effect by improving insulin action in skeletal muscle, and 4 ) whether CLA regulates expression of genes important in glucose and lipid homeostasis. (diabetesjournals.org)
  • The human body utilizes glucose and other sugars in the D-isomer form. (biology-online.org)
  • Den nukleare isomer 178m2 Hf besidder en forbavsende høj excitationsenergi for en isomer med relativ lang halveringstid , og det har ført til spekulationer om at udnytte denne energi, 1,33 giga joule , svarende til sprængkraften af 317 kg TNT , per gram af denne isomer. (wikipedia.org)
  • To get any kind of explosion, start with the hafnium isomer 178m2. (wordnik.com)
  • Like all cyclopropanes, the last three isomers are unstable, since they have three carbon-to-carbon bonds at a 60-degree angle. (reference.com)
  • Note that the position of the oxygen atom differs between the two: It is attached to an end carbon in the first isomer, and to the center carbon in the second. (newworldencyclopedia.org)
  • Unlike the isomers of propanol, methoxyethane has an oxygen atom that is connected to two carbons rather than to one carbon and one hydrogen. (wikidoc.org)
  • In skeletal isomers the main carbon chain is different between the two isomers. (wikidoc.org)
  • According to Quantum Mechanics, the gamma-rays produced are entangled, and said entanglement is transferred to the nuclei of the isomer nuclides. (freepatentsonline.com)
  • 3. Product according to claim 1 further characterized in that said "entangled" sample comprises said excited nuclei of at least one kind of said excited isomer nuclides being radioactive isotopes. (freepatentsonline.com)
  • 7. Product according to claim 1 further characterized in that said initial "variable" half-life of at least one of the aforesaid excited isomer nuclides of the "entangled" sample is strictly lower than the theoretical half-life of the aforesaid excited isomer nuclide, for example ranging between 10% and 90% of the theoretical half-life. (freepatentsonline.com)
  • 8. Product according to claim 1 further characterized in that said "entangled" sample contains said excited nuclei from at least two said excited isomer nuclides. (freepatentsonline.com)
  • Cell proliferation detections showed that both naturally occurring muricatacin (M4) and its synthetic stereoisomer (M2) are the potent cell growth inhibitors against HCT116 cell line with IC50 79.43 and 83.17μM, respectively, much stronger than the other two isomers M1, M3 and the six-membered lactone analogs. (nih.gov)
  • The present invention provides methods for purifying, identifying and using optically active isomers of quinine and quinidine as well as compositions comprising such optically active isomers. (freepatentsonline.com)
  • instead, it was observed that the optimal collision energy for the m/z 290.1 sialic acid B-fragment differed consistently between sialic acid isomers, allowing differentiation between isomers when fragmentation spectra were insufficient. (gu.se)
  • Conjugated linoleic acid (CLA) isomers rel. (europa.eu)
  • MANDELIC ACID (Phenylglycollic Acid), C 8 H 8 O 3 or C 6 H 5 CH(OH) COOH, an isomer of the cresotinic and the oxymethylbenzoic acids. (yourdictionary.com)
  • An isomer of cinnamic acid known as allo-cinnamic acid is also known. (yourdictionary.com)
  • Chemet® (succimer) contains the stable meso isomer of dimercaptosuccinic acid which has also been known as DMSA. (wordnik.com)
  • Conjugated linoleic acid (CLA) isomers have a number of beneficial health effects, as shown in biomedical studies with animal models. (diabetesjournals.org)
  • Urocanic acid isomers in patients with non-melanoma skin cancer. (biomedsearch.com)
  • Irradiation effect on fatty acid composition and conjugated linoleic acid isomers in frozen lamb meat. (biomedsearch.com)
  • NOTE: These four perfluoroalkyl and polyfluoroalkyl substances (PFAS) isomers were analyzed using surplus serum specimens from NHANES 2013-2014. (cdc.gov)
  • Starting with NHANES 2015-2016, these isomers will be included with the perfluoroalkyl and polyfluoroalkyl substances (PFAS) dataset. (cdc.gov)
  • According to EU regulations an analytical method should be able to discriminate the analyte from interfering substances that might be present in the sample, including isomers. (wur.nl)