AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsInformation ScienceHealth Care
MethylationS-AdenosylmethionineMethyltransferasesGlycine N-MethyltransferaseMethionineS-AdenosylhomocysteinetRNA MethyltransferasesMagnetic Resonance SpectroscopyMethyl ChlorideNG-Nitroarginine Methyl EsterMethyl ParathionStereoisomerismStructure-Activity RelationshipKineticsMolecular StructureProtein O-MethyltransferaseChrysenesModels, MolecularPhosphatidylethanolamine N-MethyltransferaseBetaine-Homocysteine S-MethyltransferaseProtein MethyltransferasesSubstrate SpecificityTetrahydrofolatesMolecular ConformationBetaineMethyl MethanesulfonateCorrinoids5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase5-MethylcytosineMolecular Sequence DataCholineMethanolDeuteriumCarbon IsotopesEscherichia coliThymineCytosineChemistryHomocysteineChemical PhenomenaVitamin B 12AlkylationBinding SitesChromatography, High Pressure LiquidMethaneRetinaldehydeOxidation-ReductionVitamin UDNA-Cytosine MethylasesFolic AcidDNA MethylationUroporphyrinsSite-Specific DNA-Methyltransferase (Adenine-Specific)Methanosarcina barkeriEstersAmino Acid SequenceSarcosineCatalysisTolueneNuclear Magnetic Resonance, BiomolecularDNA (Cytosine-5-)-MethyltransferaseAcetatesChromatography, Thin LayerMass SpectrometryCrystallography, X-RayProtein ConformationDNABase SequenceGuanineIsomerismCholine DeficiencyMethylaminesCarboxylic Acids5,10-Methylenetetrahydrofolate Reductase (FADH2)Models, ChemicalMethionine AdenosyltransferaseMesnaCarbonFolic Acid DeficiencyO(6)-Methylguanine-DNA MethyltransferaseBacteriophage Pf1MethylglycosidesLanosterolBacterial ProteinsProtein D-Aspartate-L-Isoaspartate MethyltransferaseTritiumBiotransformationProtein BindingCresolsGas Chromatography-Mass SpectrometryBay-Region, Polycyclic Aromatic HydrocarbonLiverAlkanesFormatesHydrogen BondingHydrogen-Ion ConcentrationAmino AcidsEpoxy CompoundsNorisoprenoidsProtein-Arginine N-Methyltransferases
Tertiary Butyl EtherEthylEsterMoleculeBenzoic acidCompoundsFolateSynthesisDonorIodidePARATHIONHydrogenBenzeneChemicalAcidCarboxyGlycineMTBEDerivativeKetoneBromomethaneMetabolismRotationLigandsHazardsProteinInteractionsMethodsReactivityUndergoAromaticFunctional groupReadilyMedicationCarbonAtomsPHAROSPotential adverse effectsFormulasPregnancyAlcoholProductsStableExposureDrugs
Tertiary Butyl Ether2
  • UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF NEW YORK -------------------------------------------------------------------- x In Re: Methyl Tertiary Butyl Ether ( MTBE ) Products Liability Litigation -------------------------------------------------------------------- x This document relates to the following case: City of New York v. Amerada Hess Corp., et al. (justia.com)
  • Methyl tertiary butyl ether (MTBE) is an additive to gasoline to decrease winter time carbon monoxide emissions from automobile exhaust. (cdc.gov)
Ethyl2
  • An experimental study of the combined effects of n-hexane and methyl ethyl ketone. (bmj.com)
  • This study was intended to determine whether or not methyl ethyl ketone (MEK) enhances the neurotoxicity of n-hexane at low concentration and after long term exposure. (bmj.com)
Ester4
  • The methyl xanthate ester is presented as a versatile protective group for alcohols. (lu.se)
  • This method is orthogonal to many common hydroxyl protective groups that can be introduced and cleaved in the presence of methyl xanthate ester. (lu.se)
  • Which functional group does not contain oxygen amine alcohol ester ketone? (answers.com)
  • Benzyl acetate has an ester functional group (in red), an acetyl functional group (circled with dark green) and a benzyloxy functional group (circled with light orange). (wikipedia.org)
Molecule9
  • We present here the first experimental study of the microwave spectrum of deuterated 5-methyltropolone, a molecule which exhibits two large-amplitude motions: an intramolecular hydrogen transfer (deuterium transfer in the current case of deuterated 5-methyltropolone) and a methyl torsion. (nist.gov)
  • In organic chemistry , a functional group is a substituent or moiety in a molecule that causes the molecule's characteristic chemical reactions . (wikipedia.org)
  • A functional group is a group of atoms in a molecule with distinctive chemical properties , regardless of the other atoms in the molecule. (wikipedia.org)
  • The atoms in a functional group are linked to each other and to the rest of the molecule by covalent bonds . (wikipedia.org)
  • Functional groups can also be charged , e.g. in carboxylate salts (-COO − ), which turns the molecule into a polyatomic ion or a complex ion . (wikipedia.org)
  • However, a moiety is an entire "half" of a molecule, which can be not only a single functional group, but also a larger unit consisting of multiple functional groups. (wikipedia.org)
  • Hydrocarbons are a class of molecule that is defined by functional groups called hydrocarbyls that contain only carbon and hydrogen, but vary in the number and order of double bonds. (wikipedia.org)
  • The breakdown of glycine by the glycine cleavage system produces a molecule called a methyl group. (medlineplus.gov)
  • They're based on the analysis of DNA methylation, a biological process by which CH3 methyl groups are added to the DNA molecule and that determines gene expression. (medscape.com)
Benzoic acid1
  • For example, permanganate often converts a methyl group to a carboxyl (-COOH) group, e.g. the conversion of toluene to benzoic acid. (wikipedia.org)
Compounds5
  • This hydrocarbon group occurs in many organic compounds. (wikipedia.org)
  • For example, in organic compounds, the methyl group resists attack by even the strongest acids. (wikipedia.org)
  • Methods exist to produce optically pure methyl compounds, e.g., chiral acetic acid (CHDTCO2H). (wikipedia.org)
  • Combining the names of functional groups with the names of the parent alkanes generates what is termed a systematic nomenclature for naming organic compounds . (wikipedia.org)
  • Scientific hazard lists sometimes specify a chemical group (such as trimethyltin compounds) without a defined list of CASRNs. (pharosproject.net)
Folate1
  • In addition, the production of methyl groups for use by folate is reduced. (medlineplus.gov)
Synthesis5
  • Methyl groups are important for numerous cellular functions such as DNA methylation, phosphatidylcholine synthesis, and protein synthesis. (nih.gov)
  • Studies that simulated methyl-deficient diets reported disturbances in energy metabolism and protein synthesis in the liver, fatty liver, or muscle disorders. (nih.gov)
  • Functional group interconversion can be used in retrosynthetic analysis to plan organic synthesis . (wikipedia.org)
  • The Project Gutenberg eBook of Synthesis of 2-methyl-4-selenoquinazolone 2-phenylbenzoselenazole, and Its Derivatives, by Y -Gwan Chen, M. A. (gutenberg.org)
  • The Project Gutenberg EBook of Synthesis of 2-methyl-4-selenoquinazolone, 2-phenylbenzoselenazole, and its derivatives, by Y -Gwan Chen This eBook is for the use of anyone anywhere in the United States and most other parts of the world at no cost and with almost no restrictions whatsoever. (gutenberg.org)
Donor2
Iodide2
  • For example, protonation of methanol gives an electrophilic methylating reagent that reacts by the SN2 pathway: CH3OH + H+ → [CH3OH2]+ Similarly, methyl iodide and methyl triflate are viewed as the equivalent of the methyl cation because they readily undergo SN2 reactions by weak nucleophiles. (wikipedia.org)
  • Common methylating agents are dimethyl sulfate, methyl iodide, and methyl triflate. (wikipedia.org)
PARATHION10
  • The international, national, and state regulations and guidelines regarding methyl parathion in air, water, and other media are summarized in Table 8-1. (cdc.gov)
  • Methyl parathion is a restricted-use pesticide (EPA 1985b, 1999a). (cdc.gov)
  • Methyl parathion formulations must be used under the direct supervision of a certified pesticide applicator (EPA 1980b). (cdc.gov)
  • Methyl parathion is not registered for use by homeowners or for use indoors. (cdc.gov)
  • Pesticide tolerances on these food crops also have been canceled for methyl parathion (EPA 2001). (cdc.gov)
  • Existing stocks of methyl parathion products with canceled crop uses were allowed to be applied through December 31, 1999 (EPA 1999d). (cdc.gov)
  • ATSDR has derived an intermediate-duration oral MRL of .0007 mg/kg/day for methyl parathion based on a minimal LOAEL of 0.22 mg/kg/day for electrophysiological effects in the central and peripheral nervous systems in rats (Desi et al. (cdc.gov)
  • ATSDR has derived a chronic-duration oral MRL of .0003 mg/kg/day for methyl parathion based on a NOAEL of 0.025 mg/kg/day for reduced hematocrit and erythrocyte counts in rats (Suba 1984). (cdc.gov)
  • The primary purpose of this chapter is to provide public health officials, physicians, toxicologists, and other interested individuals and groups with an overall perspective on the toxicology of methyl parathion. (cdc.gov)
  • Estimates of exposure levels posing minimal risk to humans (Minimal Risk Levels or MRLs) have been made for methyl parathion. (cdc.gov)
Hydrogen3
Benzene1
  • Pursuant to section 74 of the Canadian Environmental Protection Act, 1999 (CEPA 1999), the Ministers of the Environment and of Health have conducted a screening assessment on benzene, 1-methyl-2-nitro- (2-nitrotoluene), Chemical Abstracts Service Registry Number 88-72-2. (gc.ca)
Chemical6
  • Methyl-1-testosterone (M1T) (17β-hydroxy-17α-methyl-5α-androst-1-en-3-one, chemical structure in Fig. Herein, the designer steroid methyl-1-testosterone (M1T) (17β-hydroxy-17α-methyl-5α-androst-1-en-3-one) was identified, and its biological activity, potential adverse effects, and metabolism were investigated. (schalkstrees.com)
  • The same functional group will undergo the same or similar chemical reactions regardless of the rest of the molecule's composition. (wikipedia.org)
  • For repeating units of polymers , functional groups attach to their nonpolar core of carbon atoms and thus add chemical character to carbon chains. (wikipedia.org)
  • The sixth meeting of the Chemical Review Committee agreed to recommend to the Conference of the Parties that azinphos-methyl be listed in Annex III of the Rotterdam Convention and developed a rationale setting out how the criteria in Annex II had been met (paragraph 50 of the report of CRC 6 and Annex II, part A, of document UNEP/FAO/RC/CRC.6/16). (pic.int)
  • The sixth meeting of the Chemical Review Committee agreed to establish a drafting group to prepare a draft decision guidance document (paragraph 50 of the report of CRC 6, document UNEP/FAO/RC/CRC.6/16). (pic.int)
  • In most instances, they indicate a hazard is assigned because the chemical is a member of a group. (pharosproject.net)
Acid3
  • If there is another functional group at a carbon, it may be named with the Greek letter, e.g., the gamma-amine in gamma-aminobutyric acid is on the third carbon of the carbon chain attached to the carboxylic acid group. (wikipedia.org)
  • ALSO CALLED 1-Methyl-4-(1-oxo-4,4-diphenylbutyl)piperazine monohydrochloride, 4,4-Diphenylbutyric acid, N-methyl. (pharosproject.net)
  • Trianion arising from deprotonation of all three carboxylic acid groups of (2S,3S)-2-methylcitric acid. (chemspider.com)
Carboxy1
Glycine1
  • This protein is one of four enzymes that work together in a group called the glycine cleavage system. (medlineplus.gov)
MTBE1
  • We performed cross-sectional studies in two separate cohorts: (1) state workers who spent more than 25 hours per week driving in their cars and (2) a group of older (>50 years) men, to assess acute symptoms due to MTBE exposure. (cdc.gov)
Derivative2
  • citation needed] Methyl-1-testosterone is the 17α-methyl derivative of 1-testosterone. (schalkstrees.com)
  • Metandienone, also known as 17α-methyl-δ 1-testosterone or as 17α-methylandrost-1,4-dien-17β-ol-3-one, is a synthetic androstane steroid and a 17α-alkylated derivative of testosterone. (schalkstrees.com)
Ketone1
  • All of these chains contain the element Carbon but they are characterized differently due to the presence of different functional groups, for example: The functional group of a Ketone is a double bond to an Oxygen. (answers.com)
Bromomethane1
  • The absence of other specific functional group bands will show that a particular functional group is absent from the bromomethane molecular structure. (docbrown.info)
Metabolism1
  • The liver and the muscles appear to be the major organs for methyl group metabolism. (nih.gov)
Rotation2
  • This is a free rotation only in the simplest cases like gaseous methyl chloride CH3Cl. (wikipedia.org)
  • Methyl group rotation can be experimentally studied using quasielastic neutron scattering. (wikipedia.org)
Ligands2
  • Functional groups binding to a central atom in a coordination complex are called ligands . (wikipedia.org)
  • The mechanism of this enzyme is quite well known but it has an unusual methyl modi cation of one of the ligands. (lu.se)
Hazards1
  • The group discussed the potential health hazards that might result from the destruction of the stockpile, including organophosphate-induced delayed neuropathy, electroencephalographic (EEG) changes, cancer, birth defects, and keratitis. (cdc.gov)
Protein2
  • The use of MD/PT indicates that the effect of shielding the 5-methyl group from solvent accounts for 0.90 ± 0.11 kcal/mol of the observed contribution to specificity in protein-DNA complexes. (caltech.edu)
  • More than 95% of individuals with RTT have mutations in methyl-CpG-binding protein 2 (MECP2), whose protein product modulates gene transcription. (bmj.com)
Interactions1
  • Complexation and solvation are also caused by specific interactions of functional groups. (wikipedia.org)
Methods1
  • Hydroxyl groups can easily be transformed into methyl xanthate esters by several methods and are commonly used as an auxiliary in the Barton-McCombie reaction. (lu.se)
Reactivity4
  • The reactivity of a methyl group depends on the adjacent substituents. (wikipedia.org)
  • When placed in benzylic or allylic positions, the strength of the C-H bond is decreased, and the reactivity of the methyl group increases. (wikipedia.org)
  • One manifestation of this enhanced reactivity is the photochemical chlorination of the methyl group in toluene to give benzyl chloride. (wikipedia.org)
  • The reactivity of a functional group can be modified by other functional groups nearby. (wikipedia.org)
Undergo1
  • Demethylation (the transfer of the methyl group to another compound) is a common process, and reagents that undergo this reaction are called methylating agents. (wikipedia.org)
Aromatic1
  • For example, an "aryl moiety" may be any group containing an aromatic ring , regardless of how many functional groups the said aryl has. (wikipedia.org)
Functional group3
  • The functional group that makes it an alcohol is the -OH group. (answers.com)
  • For other uses, see Functional group (disambiguation) . (wikipedia.org)
  • For example, sugar dissolves in water because both share the hydroxyl functional group (-OH) and hydroxyls interact strongly with each other. (wikipedia.org)
Readily2
  • We show that these methyl xanthate esters can readily and chemoselectively be cleaved under mild conditions by the action of diethylenetriamine using microwave heating. (lu.se)
  • As the two substances differ only by one methyl group it can be concluded with high probability that also the substance caffeine is readily biodegradable. (janusinfo.se)
Medication1
  • Methyl aminolevulinate may also be used for other purposes not listed in this medication guide. (everydayhealth.com)
Carbon1
Atoms1
  • Plus, when functional groups are more electronegative than atoms they attach to, the functional groups will become polar, and the otherwise nonpolar molecules containing these functional groups become polar and so become soluble in some aqueous environment. (wikipedia.org)
PHAROS1
  • For these, Pharos creates a list of CASRNs that meet the group criteria. (pharosproject.net)
Potential adverse effects1
  • The group studied published and unpublished reports of all potential adverse effects, including carcinogenicity, mutagenicity, and teratogenicity, for the aforementioned agents. (cdc.gov)
Formulas1
  • In formulas, the group is often abbreviated as Me. (wikipedia.org)
Pregnancy1
  • FDA pregnancy category C. It is not known whether methyl aminolevulinate will harm an unborn baby. (everydayhealth.com)
Alcohol1
Products1
  • The oxidation products derived from methyl are -CH2OH, -CHO, and -COOH. (wikipedia.org)
Stable1
Exposure3
  • Separate groups of eight rats were exposed to 100 ppm n-hexane, 200 ppm MEK, 100 ppm n-hexane plus 200 ppm MEK, or fresh air in an exposure chamber for 12 hours a day for 24 weeks. (bmj.com)
  • One rat of each group was histopathologically examined after 24 weeks' exposure. (bmj.com)
  • therefore, CDC, through open meetings, convened a working group of experts to consider adverse effects of acute exposure to these agents. (cdc.gov)
Drugs1
  • Almost 20% of the individuals in this age difficulties, among others, are situations that students group report having used illicit drugs in the previous have to adapt to. (bvsalud.org)