Species in alkyl alkyl. Medical search. Frequent questions

O4-alkyl-pyrimidines with C5-modifications were prepared by using a combination of small molecule and solid phase synthesis in order to investigate their repair by different AGT homologues such as human AGT (hAGT), E. coli OGT and Ada-C and a hAGT/OGT chimera (hOGT). (concordia.ca)
We explore the synthesis, characterization, neutral launch and vacuum ultraviolet ionization of massive perfluorinated-alkyl-capped nanoparticles. (rsc.org)
This general protocol allows the use of abundant and bench-stable alkyl bromides and aryl bromides for the synthesis of a wide range of structurally diverse 1,1-diarylalkanes in excellent yields and high regioselectivities under mild conditions. (organic-chemistry.org)
This thesis describes the synthesis and stoichiometric/catalytic reactivity of Ru and Rh N-alkyl substituted N-heterocyclic carbene complexes. (bath.ac.uk)

Alkyl radicals can be generated by a photochemical reaction or by homolytic cleavage. (wikipedia.org)
The cooperative action of the photouncaging reaction and the photochemical generation of reactive oxygen species were indicated to induce the cell deaths. (rsc.org)
In principle, in situ conversion of non-reducible metal oxides into metal hydride and metal alkyl species, especially in materials with co-localized surface acid sites, could lead to unique multifunctional reaction mechanisms. (nature.com)
Under purple light irradiation, an α-hydroxytrifluoroethyl radical generated from a photoactive electron donor-acceptor complex between Hantzsch ester and N -trifluoroethoxyphthalimide was subsequently engaged in a nickel-catalyzed coupling reaction with in situ-activated alkyl carboxylic acids. (beilstein-journals.org)
It was found that treatment of alkyl (E)- and (Z)-2,3-bis(tri-methylstannyl)-2-alkenoates with methyllithium at low temperature, followed by reaction of the resultant nucleophilic intermediate with a variety of alkylating agents, afforded the trisubstituted vinylstannanes (80). (ubc.ca)
Resin acids are the predominant components of rosin (>85%) and, due to the acid functionality, the primary species for esterification reaction. (europa.eu)
However, a phase change during the reaction suggests that a soluble bismuth species, not the solid Bi 2 O 3 , is the catalytically active species in organic reactions that use Bi 2 O 3 as a photocatalyst. (chemistryviews.org)
Paola Riente, Timothy Noël, Eindhoven University of Technology, The Netherlands, and colleagues have investigated the active photocatalytic species in a model atom transfer radical addition (ATRA) reaction using Bi 2 O 3 (pictured). (chemistryviews.org)
During the reaction, the mixture changes from a suspension to a yellowish solution, which indicates a soluble catalytically active species. (chemistryviews.org)
The reaction appears to avoid the formation of intermediate organomanganese species, and a synergistic effect was found when a mixture of two ligands was employed. (organic-chemistry.org)
Mechanistic data indicate that a Ni(I) dimer is formed under these conditions, which serves as a catalyst resting state and, upon reaction with an alkyl bromide, is converted to [Ni(II)-H] as active catalyst. (organic-chemistry.org)
Reaction mass of Amines, coco alkyl and β-Alanine, N-(2-carboxyethyl)-, N-coco alkyl derivs. (europa.eu)
Reliable biodegradation studies for reaction mass of Amines, coco alkyl and ß-Alanine, N-(2-carboxyethyl)-, N-coco alkyl derivs. (europa.eu)
Reliable measured data for simulation testing on ultimate degradation in surface water or sediment for reaction mass of Amines, coco alkyl and ß-Alanine, N-(2-carboxyethyl)-, N-coco alkyl derivs. (europa.eu)
Reliable measured bioconcentration in aquatic/sediment and terrestrial information is not available for reaction mass of Amines, coco alkyl and ß-Alanine, N-(2-carboxyethyl)-, N-coco alkyl derivs. (europa.eu)

Most chemicals of this category are not defined substances, but mixtures of homologues with different alkyl chain lengths (UVCBs). (europa.eu)
In this particular case the similarity of the alkyl sulfates category members is justified, in accordance with the specifications listed in Regulation (EC) No. 1907/2006 Annex XI, 1.5 Grouping of substances and read-across, is based on the scope of overlapping of composition, similar molecular structure, physico-chemical properties, toxicological, ecotoxicological profiles and supported by various QSAR methods. (europa.eu)

As we learned previously, Grignard reagents are created by reacting magnesium metal with an alkyl halide (aka haloalkanes ). (wikibooks.org)

Traditionally the perspective on reactive oxygen species (ROS) has centered on the role they play as carcinogenic or cancer-causing radicals. (degruyter.com)

Therefore, several species can be found, differing only in the length and saturation of the acyl or alkyl fatty acid chain [ 7 , 10 ]. (hindawi.com)
The application of ionic liquids (ILs) as mobile modifiers for chromatographic separation of arsenite [As(III)], arsenate [As(V)], dimethylarsonic acid (DMA) and monomethylarsonic acid (MMA) species by reversed-phase high performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry detection (RP-HPLC-HG-AFS) was studied in this work. (conicet.gov.ar)
Upon methyl abstraction by the Lewis acid B(C6F5)3, the amine donor on the ligand side arm coordinates to aluminum, stabilizing the resulting cationic species versus secondary reactions. (unisannio.it)
The alkyl methylphosphonic acid degradation products are of a particular interest, and they represent a specific chromatographic technical challenge for use in typical separation systems. (cdc.gov)

Free alkyls occur as neutral radicals, as anions, or as cations. (wikipedia.org)
The neutral alkyl free radicals have no special name. (wikipedia.org)
However, persistent alkyl radicals with half-lives "from seconds to years" have been prepared. (wikipedia.org)
A stepwise two-photon, red light excitation of organorhodium( III ) phthalocyanine complexes was found to induce the activation of the axial metal-carbon bond to generate alkyl radicals/aldehydes. (rsc.org)

These alkyl glycosides are composed of a glycosyl moiety (one or several units) linked to the hydroxyl group of a fatty alcohol which may be a normal-chain , a branched-chain or a phenolic alcohol. (gerli.com)
Alkyl glycosides are acetals obtained by condensation of glycosides with a fatty alcohol. (gerli.com)

The palladium(O)-catalyzed addition of hexamethylditin to a variety of α,β-acetylenic esters (90), afforded in a stereoselective manner, the corresponding alkyl (Z)-2,3-bis(trimethylstannyl)-2-alkenoates (83). (ubc.ca)

For the alkyl sulfate category many mono-species tests are available on the acute, sub-chronic and long-term toxicity to fish, invertebrates, and algae, conducted with single-chain homologues as well as with technical mixtures. (europa.eu)
Weight of evidence: Since there are no reliable data on long-term toxicity studies in terrestrial species (experimental, QSAR or, based on read across), it is not possible to derive a weight of evidence for this endpoint. (europa.eu)

A dialkyl ether is an ether with two alkyl groups, e.g., diethyl ether O(CH2CH3)2. (wikipedia.org)

The smallest alkyl group is methyl, with the formula −CH3. (wikipedia.org)
Simple alkyls (especially methyl) are observed in the interstellar space as well. (wikipedia.org)
Previous work from our group revealed that replacing the C5-methyl group with hydrogen results in an increase in the proficiency of repair of O4-alkyl lesions observed by the human homologue. (concordia.ca)
Resin acids are composed of three skeletal classes of tricyclic carboxylic acids which share similar structure but vary in the position and number of the double bonds, alkyl side and methyl groups. (europa.eu)

Full realization of the optical, thermal, or electronic properties of specific single-wall carbon nanotube (SWCNT) (n,m) species requires the extraction of each specie from commercially synthesized mixtures. (techconnectworld.com)
Aqueous two-polymer phase extraction (ATPE) is a scalable, liquid-phase processing method for isolating individual (n,m) species of single-wall carbon nanotubes (SWCNTs) from multiple specie mixtures, with partitioning control usually achieved by competing two or more surfactants against the nanotube surface. (techconnectworld.com)

In organic chemistry, an alkyl group is an alkane missing one hydrogen. (wikipedia.org)
They can both be attributed to V(III) species as they are close to the emission reported for V2O3 at 515.7,23, suggesting that these are two The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. (mis-asia.com)
The initial material V(IV)-100 reached a maximum of 2.1 wt % at 130 bar and 25 °C without saturat What is vanadium hydride?The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. (mis-asia.com)
Alcohols may be considered as organic derivatives of water (H2O) in which a hydrogen atom has been replaced by an alkyl group. (amcairlines.com)

n this study the reactivity of the compound dimethyl [2-(N,N-dimethylethylen)cyclopentadienyl)]Al(III) toward ionizing species and the subsequent reactivity toward ethylene and propene have been explored. (unisannio.it)
The patentability of a claim to a specific compound, species, or subgenus embraced by a prior art genus should be analyzed no differently than any other claim for purposes of 35 U.S.C. 103 . (bitlaw.com)

Subsequent thermolysis of these compounds afforded the corresponding alkyl (E)-2 , 3-bis(trimethylstannyl)-2-alkenoates (78). (ubc.ca)

In chemistry, alkyl is a group, a substituent, that is attached to other molecular fragments. (wikipedia.org)

Alkyls are commonly observed in mass spectrometry of organic compounds. (wikipedia.org)
Background: Urushiol, the causative allergens in Toxicodendron plants such as poison ivy, is an oily mixture of organic catechols with alkyl-(C15-C17) side chains of varying degrees of saturation. (cdc.gov)

We investigated the temperature dependence of the intermolecular vibrational dynamics of pyrrolidinium-based ionic liquids (ILs) with 10 different anion species using femtosecond Raman-induced Kerr effect spectroscopy. (acs.org)
The dominant dissolved species in petroleum are elemental mercury and ionic halides. (researchgate.net)

Prolonged exposure to high concentrations of ZDTPs, calcium alkyl phenates, and magnesium, sodium, and calcium sulphonates had significant effects on the reproductive organs of male rabbits (testicular atrophy and reduction or absence of spermatozoa) which appeared to be species specific. (cdc.gov)

The glucose moiety is linked to an alkyl chain (from 10 to 14 carbon atoms) with 2 or 3 acetylenic bonds and with 1 or 2 hydroxyl groups. (gerli.com)

An efficient, nickel-catalyzed direct reductive cross-coupling of equimolar amounts of alkyl halides with aryl halides in the presence of manganese is generally high-yielding, highly functional-group-tolerant, and easy to perform. (organic-chemistry.org)

Alkyl sulfates are unlikely to persist in the aquatic environment. (europa.eu)

In an effort to make new Ru(NHC)x (x = 1-4) complexes, a range of Ru halide precursors, including Ru(DMSO)4Cl2 and Ru(PPh3)3Cl2, were combined with N-alkyl substituted carbenes. (bath.ac.uk)

The reactivity of these species towards a range of amine boranes were investigated. (bath.ac.uk)

Here three identical alkyl groups attached to carbon atoms 2, 3, and 3. (wikipedia.org)
In addition, each position on an alkyl chain can be described according to how many other carbon atoms are attached to it. (wikipedia.org)
In catalytic reactions, such materials either make use of acidic or basic surface sites or act as supports for reduced metal nanoparticles, single-atom catalysts or surface organometallic chemistry (SOMC) species, rather than forming metal-carbon bonds themselves. (nature.com)
BACKGROUND: Urushiol, the culprit allergen in Toxicodendron plants such as poison ivy, is an oily mixture of 15 and 17 carbon side chain alk-(en)-yl catechols. (cdc.gov)

In medicinal chemistry, the incorporation of alkyl chains into some chemical compounds increases their lipophilicity. (wikipedia.org)
Specifically, variations in alkyl surfactant tail length and anionic head group chemistry were observed to strongly affect the amount of surfactant necessary to cause extraction of nanotube species in ATPE extraction. (techconnectworld.com)

They conclude that the "heterogeneous" photocatalysis with Bi 2 O 3 in the presence of alkyl bromides actually involves a soluble Bi n Br m species. (chemistryviews.org)

For example, treatment of compounds (219) with 1.1 or 2.2 equiv of n-butyllithium at -78°C afforded the corresponding vinyllithium species (86) , which could either be alkylated directly or further transposed into the organocopper(I) reagent (263A) and then alkylated, to afford in each case, the tetrasubstituted alkenes (87). (ubc.ca)
OBJECTIVE: The aim of the study was to determine whether urushiol compounds are present in consumer products labeled as containing Toxicodendron species. (cdc.gov)

What Is the Active Species in Reactions using Bi2O3 as a Photocatalyst? (chemistryviews.org)

If there is more than one of the same alkyl group attached to a chain, then the prefixes are used on the alkyl groups to indicate multiples (i.e., di, tri, tetra, etc. (wikipedia.org)
Thus, resolution of As species was observed to be strongly dependant on the alkyl chain length of imidazolium-type ILs. (conicet.gov.ar)
The category consists of alkyl sulfates with a predominantly linear alkyl chain length of C8-C18. (europa.eu)
The most important parameter influencing PC-properties is the varying length of the alkyl chain. (europa.eu)
Partition coefficients are low (mostly negative values of log Pow) and they increase with the alkyl chain range. (europa.eu)
Water solubility - the solubility in water of the category members is high, in the range of 100-1000 g/L. Particular values decrease with the alkyl chain range. (europa.eu)
Other forms with different chain length and functional groups on the chain have been studied in other species ( Cyanospira rippkae, Anamaeba torulosa ). (gerli.com)
In both nematodes, species with another hydroxyl function in different positions along the hydrocarbon chain (diols) have been described. (gerli.com)

The separation mechanisms involved when ILs are used in RP-HPLC could be attributed to different processes, i.e. anion exchange between As species and ILs retained on the stationary phase, but also possible interaction of ion pairs formed between ILs and As species with the C18 stationary phase. (conicet.gov.ar)

Ishikawa, M. Precise and Global Identification of Phospholipid Molecular Species by an Orbitrap Mass Spectrometer and Automated Search Engine Lipid Search. (massbank.jp)
Bioconjugation is a descriptive term for the joining of two or more different molecular species by chemical or biological means, in which at least one of the molecular species is a biological macromolecule. (justia.com)

There are several mercury species present in crude oil and gas condensates that are seldom accounted for in routine analysis. (researchgate.net)
Hook O, Lundgren KD, Swensson A. On alkyl mercury poisoning with ad description of two cases. (cdc.gov)

In structural formulae, the symbol R is used to designate a generic (unspecified) alkyl group. (wikipedia.org)
Look up alkyl group in Wiktionary, the free dictionary. (wikipedia.org)
Upon turning to Ru(PPh3)3HCl, our group observed that the non-metallated tetrakiscarbene species [Ru(NHC)4H]+ are formed instead where alkyl = Me, Et and iPr. (bath.ac.uk)

Using zinc-sodium and alkyl iodides, he found that dialkylzinc species could be formed in situ with no need for separate handling of these pyrophoric materials. (chemistryworld.com)
Alkyl glucosides found in Nostocaceae were characterized by the presence of triols and of C-3 ketones. (gerli.com)

This convenient protocol does not require photocatalysts and metal reductants, providing a straightforward and efficient access to trifluoromethyl alkyl acyloins in good yields with broad substrate compatibility. (beilstein-journals.org)

Metal oxides are ubiquitous in catalysis as supports for active species or as catalysts themselves. (nature.com)

Reformatskii identified the accidentally formed organozinc species (a zinc enolate in modern terminology, which he depicted in the C-Zn form but is now understood to rearrange to the O-Zn form via a dimer complex) and showed that it reacts with acetone, leading to a β-hydroxy ester product (figure 3). (chemistryworld.com)

A closely related species of minimal virulence, B. thailandensis , and a B. thailandensis variant (BTCV) expressing the B. pseudomallei -like capsular polysaccharide (CPS) are also present in the soil in Thailand ( 6 ). (cdc.gov)

An acyclic alkyl has the general formula of −CnH2n+1. (wikipedia.org)
Alkyl groups that contain one ring have the formula −CnH2n−1, e.g. cyclopropyl and cyclohexyl. (wikipedia.org)

Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry identifies perfluoralkyl coated silver nanoparticles as the most stable species among the materials studied here. (rsc.org)

Typically alkyl cations are generated using superacids and alkyl anions are observed in the presence of strong bases. (wikipedia.org)

Several factors influencing the chromatographic separation of the As species, such as pH of the mobile phase, buffer solution concentration, buffer type, IL concentration and length of alkyl groups in ILs were evaluated. (conicet.gov.ar)

Usually, alkyl groups are attached to other atoms or groups of atoms. (wikipedia.org)
Alkyl groups form homologous series. (wikipedia.org)
According to the usual rules of nomenclature, alkyl groups are included in the name of the molecule before the root, as in methylpentane. (wikipedia.org)

The obtained cationic species was able to polymerize ethylene, albeit with low activity. (unisannio.it)
In this study, we base our research on the plant metabolite pulchrol, a natural benzochromene which has been shown to possess antiparasitic activity against Trypanosoma and Leishmania species. (lu.se)

The researchers combined theoretical and experimental studies to identify this species. (chemistryviews.org)

Simulation shows that a vanadium (IV) species is now present, as demonstrated by the emission at 516.1 eV, which is close to the emission of V(IV) at 516.3 eV for V2O4. (mis-asia.com)

METHODS: Gas chromatography-mass spectrometry and liquid chromatography-tandem mass spectrometry were performed on 9 consumer products labeled as containing Toxicodendron species, including topical homeopathic remedies. (cdc.gov)

The copolymeric epoxy coating is loaded with a fluorinated aliphatic chemical species and nano- to micro-scale particle fillers. (techbriefs.com)
First, the fluorinated aliphatic chemical species are hydrophobic surface modification additives that preferentially migrate to the polymer surface that is exposed to air. (techbriefs.com)
regardless of how broad, a disclosure of a chemical genus renders obvious any species that happens to fall within it. (bitlaw.com)

The first patent describing the tensioactive properties of alkyl polyglycosides was registered in 1934. (gerli.com)

Calculations indicated that C-H bond heterolysis across a Zr-O bond of a Zr(O) 2 adatom model for unsaturated surface sites gives a zirconium hydrocarbyl, which cleaves a C-C bond via β-alkyl elimination. (nature.com)

The term alkyl is intentionally unspecific to include many possible substitutions. (wikipedia.org)

CONCLUSIONS: Alk-(en)-yl catechols and multiple urushiols were detected in consumer products listing Toxicodendron species as an ingredient. (cdc.gov)

A visible-light-induced nickel-catalyzed cross coupling of alkyl carboxylic acids with N -trifluoroethoxyphthalimide is described. (beilstein-journals.org)

Identifying this species could help to understand the catalytic process and improve its efficiency. (chemistryviews.org)

The alkyl glucosides are highly effective surfactants in washing and cleansing agents but are also widely used in the cosmetic products sector, as auxiliaries in crop protection formulations and as surfactants in industrial cleansing agents and today can already be said to be the most important sugar surfactants based on the yearly production amounts. (gerli.com)

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