Bromomethane, also called methyl bromide, is a chemical compound of carbon, hydrogen, and bromine. It is the simplest organobromine compound, and one of the most common in nature. It has the chemical formula CH3Br.
Bromomethane is used as a pesticide, but is also a Class I ozone-depleting substance, so its usage is limited by the Montreal Protocol. Industrial production of methyl bromide dropped from 70 thousand tonnes in 1999 to 10 thousand tonnes in 2018.
Like related methyl halides, bromomethane is an electrophile and methylating agent.