Мonometilanilin 

Monomethylaniline (N-methylaniline, MMA) is a clear, pale yellow to amber liquid. Belongs to the class of secondary aromatic amines. The antiknock additive N-methylaniline is designed to increase the detonation resistance of motor gasolines, is used for the production of unleaded gasolines by mixing with low-octane, straight-run gasolines and is the main component of modern high-octane additives. Monomethylaniline is completely soluble in gasoline. MMA is also used as a raw material for organic synthesis and as an intermediate for dyes.