methyl

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methyl

(mĕth`əl), CH3, organic free radicalfree radical,
in chemistry, a molecule or atom that contains an unpaired electron but is neither positively nor negatively charged. Free radicals are usually highly reactive and unstable. They are produced by homolytic cleavage of a covalent bond (see chemical bond); i.e.
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 or alkyl groupalkyl group
, in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from the name of its alkane by replacing the -ane suffix with -yl, e.g.
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 derived from methanemethane
, CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184°C;, and boils at −161.4°C;. It is combustible and can form explosive mixtures with air.
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 by the removal of one hydrogen atom.

methyl

[′meth·əl]
(organic chemistry)
The alkyl group derived from methane and usually written CH3‒. Also known as carbinyl.

methyl

1. of, consisting of, or containing the monovalent group of atoms CH3
2. an organometallic compound in which methyl groups are bound directly to a metal atom
References in periodicals archive ?
Choline can act as a methyl group donor and contribute to methylation reactions, provided it is converted to betaine in the mitochondria (Kidd et al.
The stereoregularity in the insertion of propylene is measured by a C13 NMR procedure, which analyzes the sets of three adjacent propylene residues (triads) for the relative orientation of the methyl groups.
The frequency of adverse events was higher in the bardoxolone methyl group compared to the placebo group, with most events mild to moderate in severity.
The intensity of a band at 1168 cm- ascribed to methyl group wagging in PP decreases as the ABS percentage increases.
After every ingestion of a caffeine beverage, a good part of this agent is metabolized by the removal of a methyl group and theophylline enters the circulation from which it is excreted by the kidneys as such.
A methyl group is broken off the DNA at this point, causing a marked increase in FKBP5 activity.
Thus, the degree of branching could be estimated by measuring the composition ratio of methyl group (-[CH.
The attachment of a methyl group (termed methylation) to the cytosine nucleotide at the CpG site occurs throughout genes; abnormal methylation of these CpG sites has been shown to affect expression levels, which ultimately can play a significant role in the development and progression of diseases.
Miska's team discovered that piRNAs' takedown of certain genes is accompanied by another type of epigenetic mark, a methyl group stuck to a histone protein.
This is the addition or removal of a methyl group ([CH.
The most susceptible group is the methyl group in the alpha position to the ether oxygen, which undergoes oxidation, causing eventual chain cleavage, leading to a significant reduction in molecular weight at the surface and eventual surface fissuring.