3-Methyl-2-butanone

3-methyl-2-butanone, also called methyl isopropyl ketone (MIPK), is an organic compound. It is a ketone with 4 carbon atoms on the main chain and a methyl group coming off the third carbon atom. 
Like butanone it can be used as a solvent. It costs more to make, so is not used very often.