title: Ethyl 5-formyl-3,4-dimethyl-1H-pyrrole-2-carboxyl-ate.
abstract: The mol-ecule of the title compound, C(10)H(13)NO(3), is approximately planar (maximum deviation 0.1424 Å). In the crystal, mol-ecules are linked into inversion dimers by pairs of N-H⋯O hydrogen bonds, and the dimeric units are linked by non-classical C-H⋯O hydrogen bonds, forming a layered structure.
authors.affiliation: Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, People's Republic of China.
authors.forename: Wei-Na
authors.initials: WN
authors.lastname: Wu
authors.forename: Yuan
authors.initials: Y
authors.lastname: Wang
authors.forename: Qiu-Fen
authors.initials: QF
authors.lastname: Wang