Abstract

The title azo–azomethine dye, C19H15N3O, was synthesized by the reaction of 2-hydr­oxy-5-[(E)-phenyl­diazen­yl]benzaldehyde with aniline. With respect to the azo double bond, the two attached benzene rings display a trans configuration with a C—N=N—C torsion angle of 178.5 (3)°. The structure is stabilized by intra­molecular O—H⋯N and inter­molecular C—H⋯O hydrogen bonds.

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