3-Methyl-1-tosyl-1H-indole-2-carbaldehyde

The title indole derivative, C(17)H(15)NO(3)S, crystallizes with two independent mol­ecules in the asymmetric unit. The benzene ring of the tosyl group is almost perpedicular to the indole ring in both mol­ecules, with inter­planar angles of 82.60 (5)° and 81.82 (6)°. The two mol­ecules are, as a consequence, able to form an almost centrosymmetric non-bonded dimer, in which the molecules are linked by pairs of C—H⋯π inter­actions. The crystal structure displays a three-dimensional network of C—H⋯O inter­actions. A π–π inter­action occurs between inversion-related indole rings with a centroid–centroid distance of 3.6774 (16) Å and an inter­planar angle of 1.53 (15)°. This inter­action leads to a stacking of mol­ecules along the a axis.