Ethyl 6-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate
3-Nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-sulfonamide
6-Nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-sulfonamide
Ethyl 2-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylate