tert-Butyl 2-methyl-2-(4-methyl-benzo-yl)propanoate.

The title compound, C(16)H(22)O(3), is bent with a dihedral angle of 75.3 (1)° between the mean planes of the benzene ring and a group encompassing the ester functionality (O=C-O-C). In the crystal, the mol-ecules are linked into infinite chains held together by weak C-H⋯O hydrogen-bonded inter-actions between an H atom on the benzene ring of one mol-ecule and an O atom on the ketone functionality of an adjacent mol-ecule. The chains are arranged with neighbouring tert-butyl and dimethyl groups on adjacent chains exhibiting hydro-phobic stacking, with short C-H⋯H-C contacts (2.37 Å) between adjacent chains.