3,4-Dimethylacetophenone is an organic compound with the chemical formula C9H12O. It is a derivative of acetophenone, featuring two methyl groups attached to the benzene ring at the 3rd and 4th positions. This colorless to pale yellow liquid has a strong, aromatic odor and is soluble in organic solvents. It is primarily used as a synthetic intermediate in the production of various pharmaceuticals, agrochemicals, and fragrances. 3,4-Dimethylacetophenone is also employed as a reagent in organic synthesis and as a flavoring agent in the food and beverage industry.