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
3-Amino-2-hydroxy-6-(trifluoromethoxy)pyridine-4-acetic acid