Ethyl 2-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(difluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylate
6-(Fluoromethyl)-4-iodo-2-nitro-3-(trifluoromethoxy)pyridine
Ethyl 2-(difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-5-carboxylate