1-[(E)-2-(5-tert-Butyl-2-hy­droxy­phen­yl)diazen-1-yl]naphthalen-2-ol

The non-H atoms of the title compound, C20H20N2O2, is located on a mirror plane except two methyl groups of the tert-butyl group. Intra­molecular N—H⋯O hydrogen bonds exist between the hy­droxy and diazenyl groups. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds into supra­molecular chains running along the a-axis direction.