In the title compound, C17H20N2O4, the 2,5-dimethoxyphenyl unit is essentially planar, with an r.m.s. deviation of 0.015 Å. The dihedral angle between the benzene rings is 43.66 (4)°. The molecular structure is stabilized by a short intramolecular N—HO hydrogen bond. In the crystal, intermolecular N—HO and O—HO hydrogen bonds link the molecules into a three-dimensional network.