(2S,4R)-2-[(1R)-1-(4-Bromo-phen-yl)-2-nitro-eth-yl]-4-ethyl-cyclo-hexa-none.

The crystal structure of the title compound, C(16)H(20)BrNO(3), contains three chiral centers in the configuration 1R,2S,6R. The cyclo-hexane ring is in a chair conformation. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions, forming chains along the a-axis direction.