Ethyl 4-(tert-butyl­amino)-3-nitro­benzoate

In the title compound, C(13)H(18)N(2)O(4), intra­molecular N—H⋯O, N—H⋯N and C—H⋯O (× 3) hydrogen bonds generate S(6) and S(5) ring motifs. There are two crystallographically independent mol­ecules (A and B) in the asymmetric unit. The nitro group is coplanar with the benzene ring, with O—N—C—C torsion angles of −0.33 (13) and 0.93 (14)° in mol­ecules A and B, respectively. In the crystal structure, neighbouring mol­ecules are linked together by inter­molecular C—H⋯O hydrogen bonds. In addition, the crystal structure is stabilized by π–π inter­actions with centroid–centroid distances ranging from 3.7853 (6) to 3.8625 (6) Å.