5-Cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-Cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
Methyl 5-cyano-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 4-cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylate