ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY, cilt.56, ss.457-458, 2000 (SCI İndekslerine Giren Dergi)
In the title molecule, C15H11NO4S, the phenyl and benzene rings are quite planar, with maximum deviations from planarity of 0.009 (2) and 0.004 (1) Angstrom, respectively, The gamma-pyrone ring deviates from planarity and makes a dihedral angle of 8.3 (3)degrees with the 2-phenyl substituent. The sulfonamide group is involved in N-H ... O hydrogen bonding.