2-[2-(Cyclo-hexyl-carbon-yl)phen-yl]-1-phenyl-ethanone.

The title diketone, C(21)H(22)O(2), features a phenyl-ene ring having benzoyl-methyl and cyclo-hexa-noyl substituents ortho to each other. The cyclo-hexyl ring adopts a chair conformation with the ketonic group occupying an equatorial position; the four-atom -C(O)-C ketonic unit is twisted out of the plane of the phenyl-ene ring by 34.9 (1)°.