2-(Difluoromethyl)-6-methyl-3-nitropyridine-4-sulfonamide
2-Bromo-3-chloro-6-(difluoromethyl)pyridine-5-carboxaldehyde
4-Chloro-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Bromo-5-(chloromethyl)-2-methyl-4-(trifluoromethoxy)pyridine