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4-(3,7-Dimethyl-4-oxo-4,5-dihydroisoxazolo[4,5-d]pyridazin-5-yl)benzenesulfonamide
Journal article   Open access

4-(3,7-Dimethyl-4-oxo-4,5-dihydroisoxazolo[4,5-d]pyridazin-5-yl)benzenesulfonamide

Abdullah M. Asiri, Hassan M. Faidallah, Abdulrahman O. Al-Youbi, Abdullah. Y. Obaid and Seik Weng Ng
Acta crystallographica. Section E, Structure reports online, Vol.67(9), pp.O2466-U1474
01/09/2011
DOI: https://doi.org/10.1107/S1600536811034325
PMID: 22059027

Abstract

Crystallography Physical Sciences Science & Technology
The nine-membered fused-ring system of the title pyridazine derivative, C13H12N4O4S, is approximately planar (r.m.s. deviation 0.027 angstrom), and the benzene ring of the phenylsulfamide substituent is aligned at 43.5 (1)degrees to the fused-ring system. The amine group of the sulfonamide substituent forms an N-H center dot center dot center dot O hydrogen bond to the ketonic O atom of two neigboring molecules to generate a chain running along the c axis.
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