4-Amino-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
4-Amino-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
6-Amino-4-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine
5-Amino-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxaldehyde