2-Methyl-N-(4-methylphenyl)-3-oxo-3,4-dihydro-2H-1,2-benzothiazin e-4-carboxamide 1,1-dioxide

2-Methyl-3-oxo-N-phenyl-3,4-dihydro-2H-1,2-benzothiazine-4-carbox amide 1,1-dioxide

N-(3-Chlorophenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothiazin e-4-carboxamide 1,1-dioxide