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