The title compound, C17H16N2O4S, was synthesized starting from 1H-pyrr
ole-2-carboxaldehyde under acidic conditions. The X-ray structure dete
rmination has proved that the compound was the expected pyrrolo[3,2-c]
pyridine derivative and not the pyrrolo[3,2-c]pyridine isomer. The mol
ecules are packed such that the azaindole rings are stacked in one set
of parallel planes and the phenyl rings are stacked in another, with
interplanar distances of 3.50 (1) and 3.83 (1) Angstrom, respectively,
giving the molecule a 'V' shape.