Acta Cryst. (2012). E68, o3264-o3265 [ doi:10.1107/S1600536812044716 ]
Abstract: The title compound, C7H11N3O2S, exists in the 5-thioxo tautomeric form. The 1,2,4-triazoline ring is essentially planar, with a maximum deviation of 0.010 (2) Å for the substituted N atom. The ethyl acetate substituent is almost planar, with a maximum deviation of 0.061 (4) Å for the methylene C atom of the ethoxy group. The angle between the mean plane of this substituent and the mean plane of the 1,2,4-triazoline ring is 89.74 (8)°. In the crystal, molecules are linked by a combination of N-HS, C-HN and C-HO hydrogen bonds into chains parallel to .
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