Ethyl 5-acetyl-2-amino-4-methylthiophene-3-carboxylate

In the title compound, C(10)H(13)NO(3)S, prepared in a one-pot reaction, the mol-ecular conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond. The packing is consolidated by further N-H⋯O links. The H atoms of two of the methyl groups are disordered over two sets of sites with equal occupancies.