2-Chloro-3-nitro-6-(trifluoromethoxy)pyridine-5-sulfonamide
3-Bromo-5-(chloromethyl)-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine
2-Chloro-4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine
5-Bromo-4-(chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine