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