Methyl 2-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-(difluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine-3-carboxylate
4-(Bromomethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
Methyl 2-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-5-carboxylate