organic compounds
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The title compound, C16H19N3O4S, is almost planar, with a dihedral angle of 2.88 (9)° between the mean planes of the benzene and thiazole rings. The molecule adopts an E conformation about the two C=N bonds, with a C—N—N—C torsion angle of −177.01 (11)°. An intramolecular C—HO hydrogen bond exists between a thiazole methyl group and the formic acid ethyl ester carbonyl O atom. In the crystal, molecules are linked by O—-HO hydrogen bonds, forming chains propagating along [2-10]. The chains are linked via C—HO hydrogen bonds with R22(12) ring motifs, forming sheets lying parallel to (12-2). The sheets are further linked through out-of-plane C—HN hydrogen bonds with R22(12) ring motifs and C—Hπ interactions, forming an interesting three-dimensional supramolecular architecture.