Ethyl 5-(bromomethyl)-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetate
6-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
Ethyl 3-(bromomethyl)-4-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-acetate
2-(Difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine-6-sulfonamide