Acta Cryst. (2012). E68, o2643
[ doi:10.1107/S1600536812034101 ]
Abstract: In the title compound, C16H15N3O3S, the dihedral angle between the aromatic rings is 8.18 (11)° and the C=N-N=C torsion angle is 178.59 (14)°. The conformation of the thiazine ring is an envelope, with the S atom displaced by 0.8157 (18) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.045 Å). An intramolecular O-HN hydrogen bond closes an S(6) ring. In the crystal, weak C-HO interactions link the molecules, with all three O atoms acting as acceptors.
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