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Source of material Reagents and solvents used were of commercially available quality. The title compound was prepared similarly to the reported procedure . Dropwise 4-ethylbenzoyl chloride (7.5 mmol) was added to methyl 4-amino-2-sulfamoylbenzoate (7.50 mmol) in THF (20 ml) solution, then refluxed for 4h.Colorless single crystals suitable for X-ray diffraction were obtained by recrystallization from amixture of ethyl acetate and petroleum ether. Experimental details The Hatoms bonded to Canddoi:10.1524/ncrs.2009.0056 fatcat:4eglu6lnb5ay5hoxqcnshm6u6u