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Synthesis of 5-amino-1,3,4-thiadiazol-2-[N-(substituted benzoyl)]sulphonamide (4a–g), 5-(4-acetamido phenyl sulphonamido)-1,3,4-thiadiazole-2-[N-(substituted benzoyl)]sulphonamide (6a–g), 5-(4-amino phenyl sulphonamido)-1,3,4-thiadiazole-2-[N-(substituted benzoyl)]sulphonamide (7a–g), and 5-arylidine amino-1,3,4-thiadiazol-2-[N-(substituted benzoyl)]sulphonamide (9a–j)
