CH3, also known as the methyl group, is a functional group in organic chemistry consisting of one carbon atom bonded to three hydrogen atoms. It is represented by the chemical formula CH3. This group is commonly found in various organic compounds and plays a significant role in the structure and reactivity of molecules. The methyl group is often involved in chemical reactions, such as methylation, where it is added to other molecules, affecting their properties and behavior. It is a key component in many biological processes and is present in compounds like methane and amino acids, contributing to the diversity of organic chemistry.