CH₃, also known as the methyl group, is a simple chemical structure consisting of one carbon atom bonded to three hydrogen atoms. It is often represented as -CH₃ in organic chemistry and serves as a fundamental building block in various organic compounds. The methyl group is commonly found in hydrocarbons and plays a crucial role in the structure and reactivity of many molecules. In addition to its presence in organic compounds, the methyl group is involved in biochemical processes. For example, it is a key component in the formation of DNA and RNA through methylation, which can affect gene expression. Understanding CH₃ is essential for studying organic chemistry and biochemistry.