What is the formula of methyl

Methyl group

Different types of representation for the blue labeled methyl group. R = hetero atom, organyl radical, such as alkyl, alkenyl, aryl etc. or other radicals with a free valence.

The Methyl group (also known as the methyl radical) is one of the simplest atomic arrangements in organic chemistry. The formula is –CH3.[1] It is not an independent chemical substance, but always part of a larger molecule. It is the simplest alkyl group and can be found in many chemical compounds. Their systematic names then contain the syllable "-methyl-" (e.g. 2-methylbutane).

In the specialist literature, the methyl group is sometimes abbreviated as “Me”, which is how CH3OH for methanol (methyl alcohol) MeOH.


As usual for alkanes, methyl groups are extremely inert. They only react under drastic conditions, such as the oxidation of p-Xylene (1,4-dimethylbenzene) with potassium permanganate to terephthalic acid (1,4-benzenedicarboxylic acid). In these cases, the reactivity of the methyl group is also increased by the neighboring aromatic ring.

A methyl group has a positive inductive effect, e.g. B. on a neighboring benzene ring, since the carbon atom has an electron-pushing effect on the ring. The methyl group therefore directs the second substituent in the electrophilic substitution in ortho- and para-Position.

See also

Individual evidence

  1. Brockhaus ABC chemistry. VEB F. A. Brockhaus Verlag, Leipzig 1965, p. 875.