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Different ways of representing a methyl group (highlighted in blue) In organic chemistry, a methyl group is an alkyl derived from methane, containing one carbon atom bonded to three hydrogen atoms, having chemical formula CH 3 (whereas normal methane has the formula CH 4). In formulas, the group is often abbreviated as Me.
When the alkyl group bridges two main group elements, the bonding is called three-center two-electron bonds. This pattern is seen for dimethyl beryllium and trimethylaluminium. In the case of methyl lithium, the methyl group can be shared (bonded to) three Li centers. These bonding aspects influence the structures: Trimethylaluminium, dimethyl ...
Methanol consists of a methyl group linked to a polar hydroxyl group. With more than 20 million tons produced annually, it is used as a precursor to other commodity chemicals , including formaldehyde , acetic acid , methyl tert-butyl ether , methyl benzoate , anisole , peroxyacids , as well as a host of more specialised chemicals.
The methyl "substituent" or "group" is highlighted red. According to the usual rules of nomenclature, alkyl groups are included in the name of the molecule before the root, as in methylpentane . This name is, however, ambiguous, as the methyl branch could be on various carbon atoms.
2-Methylpentane, trivially known as isohexane, is a branched-chain alkane with the molecular formula C 6 H 14.It is a structural isomer of hexane composed of a methyl group bonded to the second carbon atom in a pentane chain.
It is of similar structure to the isomeric 2-methylpentane, which has the methyl group located on the second carbon of the pentane chain. As of early 1990s, it was present in American [ 3 ] and European [ 4 ] gasoline in small amounts, and by 2011 its share in US gas varied between 1.5 and 6% [ 5 ] It has close research and motor octane numbers ...
Addition of a methyl or ethyl group at the C17α position can confer increased estrogenicity due to the aromatized metabolite having much greater metabolic stability. Examples: methyltestosterone, norethandrolone. Addition of a methyl or ethyl group at the C17α position to 19-nortestosterone derivatives can greatly increase progestogenic activity.
The group may be represented as −CH 2 − or >CH 2, where the '>' denotes the two bonds. This stands in contrast to a situation where the carbon atom is bound to the rest of the molecule by a double bond, which is preferably called a methylidene group, represented =CH 2. [2] Formerly the methylene name was used for both isomers.