2-Amino-6-(difluoromethyl)-3-methylpyridine-4-sulfonamide
3-Amino-6-(bromomethyl)-4-(difluoromethyl)pyridine-2-carboxaldehyde
6-Amino-3-(difluoromethyl)-4-methylpyridine-2-sulfonamide
5-Amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-4-carboxaldehyde