1,3-Bis(chloro-meth-yl)-2-methyl-5-nitro-benzene.

The title compound, C(9)H(9)Cl(2)NO(2), is a natural product isolated from the endophytic fungus No. B77 of the mangrove tree from the South China Sea coast. In the crystal structure, the mol-ecules lie on twofold axes and form offset stacks through face-to-face π-π inter-actions. Adjacent mol-ecules in each stack are related by a centre of inversion and have an inter-planar separation of 3.53†(1)†à , with a centroid-centroid distance of 3.76†(1)†à . Between stacks, there are C-H⋯O inter-actions to the nitro groups and Cl⋯Cl contacts of 3.462†(1)†à .