Liquid Monomethylaniline is a chemical compound with the molecular formula C7H9N. It is an organic compound consisting of an aniline ring (a benzene ring with an amino group, NH2) substituted with a single methyl group (CH3). Monomethylaniline is usually found in a liquid state at room temperature. It is used as a chemical intermediate in the synthesis of various organic compounds, including dyes, pesticides, pharmaceuticals, and rubber chemicals.