1-Hydroxy-3-methyl-9 H -carbazole-2-carbaldehyde

The carbazole unit of the title mol­ecule, C14H11NO2, is planar. The hydr­oxy group at position 1, carbaldehyde group at position 2, and methyl group at position 3 (with the exception of two H atoms) are coplanar with the attached benzene ring. The dihedral angle between the two benzene rings is 3.57 (8)°. The pyrrole ring makes dihedral angles of 1.53 (9) and 2.06 (9)° with the unsubstituted and substituted benzene rings, respectively. The structure is stabilized by inter- and intra­molecular N—H⋯O and O—H⋯O hydrogen bonds.