N-(4-Iodophenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothiazine- 4-carboxamide 1,1-dioxide

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

2-Methyl-3-oxo-N-[4-(trifluoromethyl)phenyl]-3,4-dihydro-2H-1,2-b enzothiazine-4-carboxamide 1,1-dioxide

N-(2,4-Dichlorophenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothi azine-4-carboxamide 1,1-dioxide

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