In the title compound, C(10)H(10)N(2)O(3), an inter-mediate in the synthesis of anthranilamide insecticides, all the non-H atoms except the nitro-group O atom lie on a crystallographic mirror plane. The H atoms of the methyl group are disordered over two sets of sites with equal occupancies. In the crystal structure, C-H⋯N links lead to chains of mol-ecules propagating in [100].