title: 5-Methyl-1H-indole-3-carbaldehyde.
abstract: The title mol-ecule, C(10)H(9)NO, is almost planar with an r.m.s. deviation for all non-H atoms of 0.0115 Å. In the crystal, mol-ecules are connected through N-H⋯O hydrogen bonds into chains running along [021]. The chains are further connected via C-H⋯π inter-actions, forming layers in the bc plane.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur,  Malaysia.
authors.forename: Sharifah Shafiqah
authors.initials: SS
authors.lastname: Ismail
authors.forename: Hamid
authors.initials: H
authors.lastname: Khaledi
authors.forename: Hapipah
authors.initials: H
authors.lastname: Mohd Ali