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