4-{[(E)-2,3-Dihy­droxy­benzyl­idene]amino}-N-(5-methyl-1,2-oxazol-3-yl)benzene­sulfonamide

In the title compound, C₁₇H₁₅N₃O₅S, the 2,3-dihy­droxy­benzaldehyde unit is oriented at a dihedral angles of 16.83 (10) and 78.87 (6)° with the anilinic and 5-methyl-1,2-oxazol-3-amine groups, respectively. An S(6) loop exists due to intramolecular O—H...N hydrogen bonding. In the crystal, inversion dimers with R₂²(8) rings are formed due to N—H...N hydrogen bonding between the 5-methyl-1,2-oxazol-3-amine groups. These dimers are inter­linked by O—H...O hydrogen bonds, forming chains along [101] and resulting in R₂²(26) rings. π–π inter­actions occur between the central benzene rings with a centroid–centroid distance of 3.7928 (16) Å.